people ,first of all, do not all ways cut. If they do, or anyone else for that matter, it is to cope with or reflect negative feelings on the out side of their bodies. This can normally help alleviate negative feelings temporarily due to the fact that cutting releases endorphins in the brain which makes people feel good.
Other people cut not to feel good but to punish themselves because of something they did or to show how terrible they are on the inside to everyone by putting some of it on the outside.
yes cutting... it's not just for the emoes
cutter#1: Oh the agony of living!!! I want release from this pain but committing suicide is a long and messy process! I'll do some emo cutting instead!
(cuts ones self)
Ahhh... that's better.
cutter#2: Arg! I'm so terrible. My heart is black and cold, no one sees it. I should be as ugly on the outside as I am on the inside! (proceses to cut ones self in to a series on thin bloody strips)