I think that there's nothing wrong with masturbation. If you're not feeling good about your own sexuality and your own body, you're not going to feel good about anything else.
Science is the study of the admitted laws of existence, which cannot prove a universal negative about whether those laws could ever be suspended by something admittedly above them. It is as if we were to say that a lawyer was so deeply learned in the American Constitution that he knew there could never be a revolution in America.