Your beliefs in anthropogenic global warming affect your political position, and if you live in a democratic country, your political position affect government policy: you can vote, you can campaign with various level of commitment, you can run for office. Even if you choose to do no such thing, you are still making a political decision.
And by the way, what do you mean by "I don't have even a slight preference to either direction"? It's not like it is a binary question where you can assume a 50% prior probability. You must be necessarily using a non-trivial prior. Then why are you deliberately ignoring evidence that could be used to update?
Democracy has the wonderful property that it obeys the Central Limit Theorem. Each person concentrating on the areas they know well and care about produces an overall bell curve that makes a fair bit of sense, even if no individual voter sees the big picture very well.
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).