| There are still years to go, although there seem to be breakthroughs in the research every once in a while. Finding a safe and effective way to keep a man from producing millions of sperm a day has proven to be more difficult than it is to keep a woman from producing one egg a month.
However long it takes, it will be worthwhile. Men are very willing to take responsibility for birth control, even though there are comparatively few options for them. In fact, men now take responsibility for more than a third of all contraception. More than 20 percent of all couples who use contraception rely on the condom. Nearly 11 percent rely on vasectomy. Three percent rely on withdrawal. And more than two percent rely on periodic abstinence.
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