I think I get it. Well, maybe killing yourself with a robot is no different from shooting yourself with a really elaborate gun. But somewhere in that elaborateness is a line to be crossed; otherwise convincing someone else to kill you would be the same thing. Unless being made out of bio-parts somehow makes you irreducibly different from a robot?
Suicide is a bad enough idea by itself, but the possibility of turning into James Brady is very high when not doing it right. I mean, if you're dead, why spare expense? Get a 45 ACP minimum.