Why do people say suicide is selfish and cowardly?

You deserve life and all the happiness and self worth that living can bring you. If you aren't able to recognize your worth and potential as a human being I think it is sad and desperate but not cowardly and selfish. I suspect that if you were to find the strength to pursue healing yourself emotionally, and mentally you would be able to learn to live a life that nurtures you. With very little thought of what anyone else thought of you.