I think I'm starting to lean that way as well. It doesn't even look like our contribution to CO2 is significant. It doesn't look like CO2 is the greenhouse gas to be worried about. And I question the motives of this usual cast of anti-Capitalism characters.
Finally, I haven't heard the great arguments for why global warming will be a bad thing. Slowly-rising water is something you can combat with technology, ingenuity, and hard work. The glaciers which carved out the Great Lakes are something you could not combat. Cities would be slowly pushed over. It is a scenario that far-distant generations will have to deal with. I hope they don't blame us for not taking the "long-view" while we think we are doing just that.
Let's talk about real problems, like getting some of our eggs out of this single basket.
CO2 is well known to be an effective greenhouse gas. If you are getting information from andre on this issue, I assure you that you are being misled. You might want to check out some work by Dana Royer on CO2's effect on past climates.
Impacts depend on how much warming. 1 or 2 degrees probably won't be bad, but we're introducing a climate shift an order of magnitude greater than the noise of natural variability, and at a very fast rate. Ice is not doing well, ecosystems will not adjust to rapid 3 C warming, and poor countries and those that live off of glaciers may not do well under business-as-usual. There is a lot of mention on impacts in the literature, including IPCC AR4 WG2.