It is very important for this to exist because currently women in civilised countries have a monopoly on human existence and thus a god-like status in society.
Woman takes pill, man ****s her, women doesn't get preggers.
Woman stops taking pill, man continues to **** her, she gets preggers without his knowledge.
This can stop if the pill for men arrives! NO MORE BABY CAITLIN JENNERS, MEN WILL LIVE.
PRAISE SCIENCE.