ever notice when you're playing EQ that you behave differently as different characters? it's not even intentional. you're a ranger, people know you're kind, you're kind to all. you're a druid, people are always trying to use you. you retaliate and become a jerk. enchanters become confident control freaks, mages think too highly of int casting, the list goes on. according to your abilities, you have a certain role to fill, both in battle dynamics and social dynamics.
you become, to an extent, what people already see in you.