Nothing derails a man's potency more than Masturbation and Over-the-counter drugs.

You will always blame women that cheat but you are actually the cause of it all.

A man with weak erection and low sperm count will find it very difficult to impregnate a woman

I disagree wit OP over the above 3 reasons. Meanwhile there's always a way out if you find yourself or your partner a victim of any of the above listed 3 causes. There's hope for any sufferer