I also notice that you could make the same exact arguments against the development of any other product or resource. I don't think we should stop mining the hundreds of finite ores that we have, and I don't think we should avoid any new sources.
LOL... my FReeper-lady-fair (slugbug) just pointed out you could say the same thing about the finite supply of oxygen... America! Stop breathing NOW! Save that resource for the future! =^) (okay, it's renewable.... but so is petroleum if you have the patience!)
Correct me if I'm wrong, but doesn't ANWAR belong to the Federal government, meaning all of us? While the wishes of Alaskan politicians, tribal groups, and citizens should be taken into account, this is land and oil belonging equally to everyone in the U.S.
As for oxygen, it is recycled very quickly by the respiration of plants. We'd have run out a long time ago if it didn't.