haha - I would be the other way round.
TBH, I don't mind at rehearsal that much, but I do object at gigs.
Either way, all things in moderation, quite often my group doesn't moderate very well, and we are shitty because of it.
Sometimes it really is. Sometimes you join a group and everything is fine for a while, and those issues come out later. Having a look through the 'worst bandmate' thread, there are quite a few where there is some bandmate who originally was perfectly reasonable and then something happened.