The only thing I'd add is that anyone considering suicide to the point of going through with it probably isn't in a state where they can logically choose the method that is best for society as a whole.
Exactly, which is why complaining about inconveniencing someone else by their choice of how its done seems so petty and classless.
But then you have things like this. Or, as mentioned, the train conductor that has to go home at night and think about the guy who jumped in front of him. People have occasionally chosen suicide-by-cop, and think about the counseling the cop needs after that.
Just because they're in a bad place doesn't excuse them from putting other people in a similar place needlessly.