this was inspired by that "incest" thread, wasn't it? (not to imply they are similar, but they are both taboos that people NORMALLY don't like to talk about)
Anyway, yes, it is wrong. Not only health wise (yes, it is VERY unhealthy, this is scientifically proven), but because...I mean how would you live with yourself knowing you ate another human being? You just ate someone who once had thoughts, hopes, dreams, a family, and they are now dead and inside of you. If that thought doesn't disgust you there is something mentally wrong, period.
EDIT- people are okay with this? are you fucking serious? Here, read this, all of you, right now.
http://www.scienceline.org/2008/01/21/ask-stern-cannibal/