It's fun to do my own personal lists--a way to reflect on what I've played and the things I enjoyed the most. It's also fun to listen to the GB podcasts and hear them argue out the points and come to some kind of consensus in the end. Some of the fights in past years have been hilarious to listen to, even if I don't really care about the results.
As for caring about what other people think about games of the year? I've never really cared about that. It's fun to hear about other people's tastes, particularly when they can explain why they made those choices eloquently, but I don't feel any need for validation. Enjoying it without any amount of debate or frustration that your picks aren't your favored website's picks is the key.