[quote=libertarian_4_life"]I don't need property rights to legitimatize my breathing of air. Maybe you do, but me and billions of other people dont.[/quote]
Air is not a scarce resource. Neither is sunshine. The entire discussion regarding ownership of natural resources applies to scarce resources, i.e. resources which come in a limited supply, and where one person's consumption or use impacts that of others. In other words, resources such that there is a potential conflict over their use. If there is a potential conflict, a peaceful society requires mechanisms for determining who can legitimately make decisions. That person is the owner.
2. Libertarians are obligated not to initiate aggression against other humans (without their consent).
3. "First come / first serve" and "I was here first" and "I discovered it first therefore it's exclusively mine" and "finders / keepers" are not principles of libertarianism.
You got the first point correctly. Which is precisely why you are wrong on the second point. If I am the first to use a resource, using that resources involves no initiation of aggression against any other humans. Hence it is allowed.
Having started to use that resource (something we just concluded I am allowed to do), the second person who comes and wants to use the resource (or a group of people, or the state)
would be initiating force against me. Hence that would be forbidden. So by being the first to use the resource, I am effectively its owner, as no other person is allowed (based on libertarian principles) to mess up with me.
4. In a fair capitalist world, the Chinese child has a right to own land. Likewise, you also have a right to own land.
I don't know what "fair" means. Despite repeated requests, I am yet to find anybody willing to define the term. Please feel free.
Nobody has a right to own anything other than their own body. Libertarian principles (specifically NAP) which you seem to recognise merely state that you are not allowed to initiate force (i.e. use aggression) against others. Where did you get the "right to own land" from?
4a. Earth has finite resources which means: the amount of water, land, and air per person will decrease as population increases.
Why limit yourself to Earth? Humanity many well be able to use the virtually infinite resources of the solar system (not to mention the rest of the universe) well before Earth's resources are exhausted. The quantity of water, land and air available on Earth is virtually unlimited, and every sign suggests population size will stabilise at a level that can easily provide excellent standard of living to everybody.
5. The year is now 2012, not 1912 or 1812. Most of the valuable land in the world is already owned or controlled.
That was also the case in 1912 and 1812. You see, the lands of the great plains, for example, wasn't considered valuable in 1812. It was too far from "civilisation", and the cost of getting there and back (not to mention the risk) too great.
In every generation, most of the valuable land (and other resources) is already owned or controlled. Technological advances and other changes
gradually make more land (and other resources) available. At any point in time, one can identify marginal land whose value just starts to exceed the cost of making use of it. That is the land that is open to homesteading.
In fact, if we considered "owned or controlled" by libertarian (rather than government) terms, most of the land in the world isn't justly owned. Most of the land (or at least very large fraction of it) are controlled by governments, but are unimproved, and thus not
justly owned by anybody. Even Hong Kong, one of the densest countries in the world, is full of open, undeveloped land.
6. Due to increasing world population, either Earth should enlarge, or landowners should relinquish ownership of some of their lands.
How about we start with the world's governments, and all the land they unjustly control?
1. Privatization of land,water,air,etc. means that current and future humans may be denied free access to privitized lands,water,air (including recently discovered resources).
True. But so what? "Theft" has a very specific meaning - it is the taking of something that belongs to somebody else. Unused land isn't owned by anybody, so taking it isn't "theft".
Prior to the first time the land is used, it is open to homesteading (or conversely to non-exclusive use) by anybody. That's because at that stage using the land doesn't involve aggression. Once that land has been put into exclusive use (i.e. the kind of use that naturally requires exclusive access), its use by others would necessarily involve aggression, and is thus forbidden.
If homeless squatters come to your lands, and you forcibly evict them, then you may be guilty of violating the non-aggression principle.
And, by the same logic, if a hungry person (or any person, really) comes and grabs my food, or picks apples from my tree and I forcibly stop them, am I also being aggressive? How about if they enter my living room and squat on the sofa? Am I allowed to evict them then? Or should we prohibit locks altogether?
What if the world human population is 100+ trillion and 100 people simultaneously want to initiate a a farming project on the same land?
Both are highly unlikely. I do recognise an emergency exception to the normal libertarian principles. If 10 people landed on a small island, and one ran first and found and put to use the only source of fresh water on the island, I would recognise the need to adjust the normal calling to give the person exclusive access.
But Earth is huge, humans only use a small fraction of its land area, no critical resources are in any danger of being monopolised, and emergency exception is far from applying.
Your ideas would work well in a world with almost unlimited resouces and small world population. Unfortunately, Earth is not such a world.
My point is that for practical purposes it is. Earth is more like an unlimited resources world than it is like a small island.
The Australian government can determine ownership of natural resources simply because it has the power to do it.
So might makes right? They have the power, therefore they have the right to do so?
Setting aside principled arguments, I need to mention that obsession with land is quite anachronistic. As human societies evolved from agricultural to industrial, the significance of land has diminished. In agricultural societies, land is the most important resource. In industrial (and even more so in knowledge-based economies), land has a quickly-diminishing value.
With the exception of city centres, land is relatively cheap. It would be even cheaper if governments removed artificial restrictions on land-use, and stopped monopolising unimproved lands.
2. Land ownership is a privilege (and not a right) in most countries. Too many unfortunate people are evicted from their homes and have no where to go.
Of course they have places to go. What they lack is not standing space or living space. What they lack is a house (which costs money to build) near a city (where land is always going to be scarce).
Let me give you an example. I used to live in Plano, TX, a suburb of Dallas. Plano has no high-rises. Most people live in single-family homes. The city's area is about 185 km2 (72 sq miles), and its population is about 270,000. With the same density, the entire population of Earth could fit in less than the area of Australia, or about 3% of the land area of the world.
So the issue isn't that there is no space for everybody. The issue is that too many people want to live near city centres. There is no choice but to ration who gets to live in those desired locations.
Free men are not equal and equal men are not free.
Government is not the solution. Government is the problem.