Speaking as someone who has an alt with cannibal tendancies, it can be fun. Like any "villain" concept it all depends on what you do with it and how you present the character to others. I never have him go after player characters unless invited to do so. Hint: it hasn't happened yet. Anyone he's gone after so far have been NPCs created solely for his storylines.
In dealing with other players, there are plenty of creepy allusions (and Hannibal jokes), but it's not something the character needs to survive. For him, it's a weird psycological addiction which plays into it.
In dealing with other players, there are plenty of creepy allusions (and Hannibal jokes), but it's not something the character needs to survive. For him, it's a weird psycological addiction which plays into it.