Being suicidal is not cowardice, but a loss of hope on many levels - no hope for one's self, the world, or the future. No light at the end of the dark tunnel. Someone might feel that they're a burden to others and that the only way to get out of the way is to get out of the way. One might feel so hurt by others that they lose all sense of self worth. One might feel physical or emotional pain that is simply unendurable and there's a firm belief that it will never end, and if anything only get worse. One might have lost so much function (like an athlete having both legs cut off or a singer that gets throat cancer) that everything that they were can no longer be, and they can't imagine what else they are capable of. It's hard to have the courage to live on when there is absolutely no hope whatsoever - and for the person who is suicidal often that's how they see it. When someone's depressed they aren't thinking straight - their perspective is distorted - they can't remember anything good, they can't enjoy anything, they are unable to perceive positive emotion from others - everything appears dark and hurtful. Even attempts to help that person may be painful to them because instead of seeing it as a sign that someone cares, all they think about is that they are being looked down on, or a burden, or that others are trying to control them. Every cup is not just half empty - it's completely empty. They are blind and deaf to any beauty or love in their darkest moment. Fortunately the vast majority of people who reach that point only do so temporarily and whether they get external help or not, a spark of hope remains to restore the soul and give them the courage to go on. Things do get better. People who call suicidal people cowards have no idea what they're talking about. The amount of courage it takes to live on despite the firm knowledge (in their minds) that there is no hope whatsoever is gigantic, and some people fall short of that, but it's not cowardice - it's simply being vulnerable at a certain place and time.