The only thing that will change is that you will not be able to make your partner pregnant. Your body will continue to produce the hormones that make you a man. You will have the same amount of semen. Vasectomy won't change your beard, your muscles, your sex drive, your erections, or your climaxes. Some men say that without the worry of accidental pregnancy and the bother of other birth control methods, sex is more relaxed and enjoyable than before.