It's pointless if you don't finish it, but you start destroying yourself because you can't go trough with ending it from the start. You need such a good reason to be able to do it that you make everyone hate you, you flaw your body and your mind, from the inside and the outside so you can be sure that when you disappear you won't leave any pieces behind, any parts; because those parts will be the healthy ones, the good ones and you don't want that, you don't want to be remembered. You were just a failure that had to make it's way through the lives of others, others that are succeeding.