I don't care, because there's nothing I can do about it. It also applies to all large-scale problems, like national elections.
I do understand, that that point of view creates 'tragedy of commons', but there's no way I can force millions of people to do my bidding on this or that.
I also do not make interventions to my lifestyle, since I expect AGW effects to be dominated by socio-economic changes in the nearest half a century.
I think that's a common misconception for not actually running the numbers. We individually have a very low chance of changing anything at large-scale problems, but the effects of changing anything in large-scale problems is enormous. When dealing with very minor chance of very major change, we can't just use our intiutions (which breaks down) but we need to actually run the numbers.
And when it's done, like it was on this post, it says that we should care, the order of magnitude of changes being higher than the order of magnitude of our powerlessness.
Note: Please see this post of mine for more on the project, my sources, and potential sources for bias.
I have written a couple of blog posts on my understanding of climate forecasting, climate change, and the Anthropogenic Global Warming (AGW) hypothesis (here and here). I also laid down the sources I was using to inform myself here.
I think one question that a number of readers may have had is: given my lack of knowledge (and unwillingness to undertake extensive study) of the subject, why am I investigating it at all, rather than relying on the expert consensus, as documented by the IPCC that, even if we're not sure is correct, is still the best bet humanity has for getting things right? I intend to elaborate on the reasons for taking a closer look at the matter, while still refraining from making the study of atmospheric science a full-time goal, in a future post.
Right now, I'm curious to hear how you formed your views on climate change. In particular, I'm interested in answers to questions such as these (not necessarily answers to all of them, or even to only these questions).