Global warming is a fact; the question should be 'do you think we should do anything to combat global warming?'
Global warming has, or is being, accelerated by our actions, this is as a result of our evolution as human beings, you could argue trying to combat it is also part of our evolution as becoming educated about the effects we are having on our planet is leading us to want to change the path we have unknowingly chosen.
Should we try and control such things, who knows? If we hadn't have burnt fossil fuels (etc) would the earth's temperatures have risen anyway but at a slower rate, who knows? How much time would we / have we bought by trying to educate ourselves, guess what...who knows!!
If we evolve enough to change things so be it, but if the dinosaurs had done the same would we be here now??
Who are we to try and control the earth and it's future?!?
(A brief glimpse inside my head... Don't feel sorry for me, I'm fine, it's my wife you should feel sorry for!)