Roger Pielke Jr. has addressed the problem on his blog.
I recommend you read it in full. You will also see where I stand on this ;-)
Here is the teaser:
one needs to know only two things about the science of climate change to begin asking whether accelerating decarbonization of the economy might be worth doing:
* Carbon dioxide has an influence on the climate system.
* This influence might well be negative for things many people care about.
That is it. An actual decision to accelerate decarbonization and at what rate will depend on many other things, like costs and benefits of particular actions unrelated to climate and technological alternatives. In this post I am going to further explain my views, based on an interesting question posed in that earlier thread. What would my position be if it were to be shown, hypothetically, that the global average surface temperature was not warming at all, or in fact even cooling (over any relevant time period)? Would I then change my views on the importance of decarbonizing the global energy system?
And the answer is ... no!