Damn, I hate being in the 'oldest' category of a poll, and even more so not being remotely near the next category down. But so be it.
Most beloved RPG: Planescape: Torment
I've been playing RPGs and MMORPGs for fifteen years now and have found that the average age of the players that I know in them has increased along with the timeline, other than in a couple of notable exceptions. In the current main MMORPG I play, about 90% of the people I know whether personally or via forums would fit into the 'oldest' category of this poll.