If you arrive at the conclusion that there is no point to any of it, why not end your life on your own terms? Is it your own terms if your mind is clouded by s

If you arrive at the conclusion that there is no point to any of it, why not end your life on your own terms? Is it your own terms if your mind is clouded by sickness? I know people decline treatment of diseases for several reasons, but we are speaking philosophically here. it seems to me more courageous to decide of the moment. Is it courageous to leave behind others to pick up the pieces? I know this isn't always the case and I wouldn't call suicide "cowardly", but I might call it "selfish".