It's just sort of what I have time to do anymore. Wake-up, get ready, family time, drive to work, work, drive home, family time, 15 - 60 minutes of WoW, bedtime, rinse repeat.
I don't have a weekly game group, I get to SF maybe once every month and a half, and that will be much less now that I am a 7.30 - 6.30 guy, and I really have no local friends up here.
It's really just what fits my free time schedule, and I think it is interesting to simply listen to people talk about things that interest me, even remotely interest me.