people who self harm are handicapped no exceptions
you know depressed animals bite their own limbs off sometimes? and it happens to about 95% of animals that encounter depression? self harm is nature's coping mechanism when you can't vent your frustration out on any other animal present.
animals that are isolated in captivity have nothing around them to attack, so they attack themselves. Humans have the option to attack people around them, but we understand the weight of consequences (jail, charges, loss of friends) so we attack ourselves. If you've been upset before and didn't cut yourself, chances are you went online and called people bitches instead. So... whats better, giving yourself minor scratches, or being a richard and losing all your friends