Really? Because I can think of at least a few terrible purposes people committing suicide've set themselves on. Arguably a perhaps-only-fleeting, foolish, mad, mortal purpose is often what's at work in suicides. Not that there's anything wrong with that, I'm not judging. Still, you're not going to convince me say Hunter S. Thompson lacked for purpose or reasons when he took his own life with a gunshot wound to the head. Terrible purpose, macabre purpose, still purpose. Not to be confused with some tinny, dime store philosophy, platitudinous panacea for whatever grim existential horror awaits you in particular. The ability to opt to die strikes me as one of the last things that could be taken from a person. We find our own meaning — purpose, like principle and duty would seem to be where we e'er begin to misstep.