I don't really understand this thread as if someone wishes to cease existing on their own terms then that's their personal decision, it's not something for other people to decide. Only the individual is the one experiencing their existence and not other people, we all experience existence differently after all.
I believe that all humans should have the option to permanently switch off their consciousness when they wish to. As after all we were all cruelly burdened with the ability to suffer in this existence, one shouldn't have to delay their inevitable if they don't wish to all because other people were selfish enough to procreate. The right to die is the most basic human right.