I think it depends how old you are. I've found that clans are are almost always high school kids and sometimes university/college students. If your in that age bracket it may be fun to try out.
Personnaly, if I was that age again, and agreed to join a 'clan', I still wouldn't unless they offered a private/fast/dedicated server to play on with the rest of the clan, and there should be plenty of members so there is always someone to play. Otherwise I just don't see the point.
------------------
