There are at least two reasons I think your question is badly stated.
First, we're not "doomed". Life will go on for the vast majority of us. It just will be hard and we'll be a lot poorer. Some poor people (not all) will die of starvation.
Second, it's a phony choice. It's like this. Suppose a friend of mine is going to jump off a cliff, insisting that a miracle will save him. If he jumps, do I want a miracle to save him? Sure. Is it going to happen?
The data on global warming is overwhelming.
"I wasn’t convinced by a person or any interest group—it was the data that got me. I was utterly convinced of this connection between the burning of fossil fuels and climate change. And I was convinced that if we didn’t do something about this, we would be in deep trouble.”
Vice Admiral Richard H. Truly, USN (Ret.)
Former NASA Administrator, Shuttle Astronaut and the first Commander of the Naval Space Command
Even the most unlikely people are coming to see that.
"Former House Speaker Newt Gingrich challenged fellow conservatives to stop resisting scientific evidence of global warming"
http://www.newt.org/backpage.asp?art=4331
There's a lot less controversy about this is the real world than there is on Yahoo answers:
http://www.worldpublicopinion.org/pipa/articles/home_page/329.php?nid=&id=&pnt=329&lb=hmpg1
And vastly less controversy in the scientific community than you might guess from the few skeptics talked about here:
http://www.sciencemag.org/cgi/content/full/306/5702/1686 and:
"There's a better scientific consensus on this [climate change] than on any issue I know - except maybe Newton's second law of dynamics. Global warming is almost a no-brainer at this point,You really can't find intelligent, quantitative arguments to make it go away."
Dr. Jerry Mahlman, NOAA
Stphen k said much the same thing in his short but great answer, which nicely modified your question.