Because when your problems aren't fixable the death option is like a nice back up plan when the shit hits the fan. For me life isn't worth living when you have depression and other permanent health issues. I'm only existing so I don't hurt other people by leaving. I just can't wait until I die I'm seriously hyped!!! as sick as that might sound the thought of not being in my broken human body and mind makes me feel euphoric knowing this nightmare life is only temporary.