First of all, I would point out that condoms are not designed for or marketed to women. Male condoms are the third most commonly used type of birth control and vasectomies are the fourth. So I am not sure that the premise of this question is quite accurate.
Of course, your question did say "most" and 57% is "most." So why would this be? The best explanation for this is that women have more to lose than men do if they do not use contraceptives. If the woman is not in a long term relationship, her pregnancy would have much more of an impact on her than on the man. The man might pay child support, but even so, his life would not be impacted like hers. She would be the one to carry the child to term, give birth to it, and then take care of it as it grows up. Because of this, her life would be affected much more than his was.