The prevailing focus of birth control programs on women's methods is a result of the prevailing attitude that the purpose of birth control measures is to protect women from excessive child bearing while allowing men to have their pleasure and escape the consequences of their actions. Male methods of contraception, such as coitus interruptus and condoms, although they have historically played a far greater role than women's methods, are denigrated as being unreliable or associated with extramarital sex respectively. Family planning clinics promote diaphragms, cervical caps, or pills in preference to condoms or coitus interruptus. Only 8% of the world contraceptive budget is spent on male methods. In the UK, family planning services are available free -- to women. If men choose sterilization, they are expected to pay for it themselves. Nevertheless, the increasing popularity of vasectomy shows that men are willing to accept responsibility for birth control. Male involvement needs to be promoted through small-scale studies and social marketing technics away from the medical setting, and condoms and vasectomy services must be available. The pill has placed the responsibility for birth control on the woman, but the responsibility must be shared, no matter which partner initiates the contraceptive precaution. The importance of behavioral factors is shown by the fact that most contraceptive failures are due to human error.