preemptive edit: I had some idea of what I was going to say before starting this post, but it became a little more of me asking questions and then thinking of the answers while writing. Bear with me.
"Liberals" don't watch the same television programs as you do, so they aren't as convinced as you are that Team America is bombing Iraq and stealing their oil "to save lives."
Well first, maybe the reason for being there isn't "to save lives." Second, we're stealing their oil? Have you seen gas prices in the U.S. lately? I think that in order to say that the U.S. is "stealing" you would have to show that the U.S. is taking the property of another without permission and without compensation. Let's see the evidence.
The timing of the war and as Karl_Bonner said, the agenda of the war, are at question for many. Pretend the agenda was purely humanitarian. Let's say no claims of Al Qaeda links, terrorism support, weapons programs, or broken U.N. resolutions were made. The only reason we did it was because he was an oppressive tyrannical dictator. Would you be behind it then? The response to the above question (actually, I never get a response, just a counter question) is "Well what about ______ country or _____ evil dictator? Why aren't we after them too?" That's a great question, why aren't we? There might be something to be said for too much world police and such, but if not us then who?
"The only thing necessary for the triumph of evil is for good men to do nothing." -Edmund Burke
Do we sit idly and allow these infringements of basic human rights and freedoms to go unchallenged? Or as another thought, is it none of our business? Do we expect the population of such a state to revolt once it becomes "too much?" If they have not yet revolted do we consider that their own inaction is no one's responsibility but their own?
That would answer the question posed above which was "Well what about ______ country or _____ evil dictator? Why aren't we after them too?" I suppose if we decided it was their responsibility alone to take control of their own lives and overthrow their government, then we would not be inconsistent to not threaten their governments. In the case of Iraq then, we would require more than humanitarian reasons. And that is where we are-the people in the positions of power perceived a national security threat from Iraq. That went up and beyond humanitarian concerns to justify action in their opinions.
Would it be in our own best interest to remove tyrannical dictators? It seems to me that a case could be made to claim that those conditions are threatening to the free world and are breeding grounds for the terrorism we are dealing with today.