Personally I try to keep it from happen, but I guess I don't actively discourage it persay. Why? Well there's roleplaying, which my group encourages above all.
Really I don't think it would be a problem if we didn't have a quite immature 14 year old we play with. Not that 14 year olds are immature... just this one.
He gets upset, and has died 2 times from picking a fight with the party's paladin. The paladin felt bad the first time, and took him to the church for a raise (mind you a raise... hehe. Thief went from 13 to 12th level). the second time the thief died, and was left dead... he shouldn't be stealing.
We do a half of the level of the lowest PC for creating new charecters, so what does the twit do? Make a 7th level blackguard.
Yeah... He'll last long. His name is.... Murder Paladinson.
Really, we would kick him outta the group if I didn't grow up with his old man...
Longdale