My grandfather killed himself last year. He was in his 80s. A proud, driven man, fiercely independent. Proper old school. His health started failling to the point where he needed help cooking food, and it wouldn't have been long before he would have needed 24 hour care. He saw where his life was going and decided to have none of it. The nurse found empty bottles of pills near his body. No note, no final goodbye. Just decided to call it quits.