I've got the CCMB to thank for a hell of a lot over the years (too much to mention in fact since around 1999) so I'll probably never stop reading and posting there, but it definitely lost something with the recent clampdown on humour, not to mention those godforsaken and intrusive adverts.
A lot of the great posters left, and of those that remain, some only post sporadically.
I think there's plenty of room for all of the three main MBs to service their own various 'clientele', so onwards and upwards for them all IMHO.