Actually, that is sometimes the BEST thing to tell someone that is suicidal (from someone that once was). "Suicide is a permanent answer to a temporary problem." That no matter HOW you do it, there will be a mess, someone you love will be the one that "finds" your dead body, and that will haunt them.
If you have kids, or have friends with little kids, it would be the kid that finds you. Do you really want that? Do you really want your close friends to clean up your blood, brains and gore???
It is the some self-centered action someone could do. Lots of teens do it thinking, "this is how I will get back at you" to the adults in their short lives that failed (perception or reality) them.
Again, it is never one size fits all.