Suicide is, like all human things, much more varied than the stereotypes about it.
These two twins, 45 years old, deaf since birth, were granted permission to be euthanized by their doctor from a Norwegian court. They have been deaf since birth, and are both going degeneratively blind. They have never been apart, and without their eye sight they wold have ended up living a "life" of pure terror. No communication, not knowing who was touching them, not being able to share anything with anyone.
http://www.cbsnews.com/8301-204_162-...go-euthanasia/
There is such a thing as "mercy killing."
and sometimes, it is self-inflicted.