If someone put a gun to my head now, I would smile and thank him. It would definitely be a good thing to everyone if I died. They wouldn't have to worry about me any more. And I wouldn't have a chance to hurt them.
Besides, I have a feeling that I am going to die soon anyway. If I got killed now, I wouldn't have to find a way to do it myself. So, my death wouldn't hurt them that much. And I would be truely happy when I died because all the pain was going to end.