I've been fucking women for 50 years, not bragging but had my fair share of women I've bedded, never once got one pregnant unless they wanted to be, ex and current wife, I've talked to many of these women, most know when their Ovulating, I was very careful during these periods not to inpregnate them, used different methods to prevent this, withdrawl, completed with oral, day after pill, foams, and these were the women who weren't on birth control, then I got a vasectomy, solved that problem. Oh I never got a STD, I allways washed up immediatly afterwards, believe me it worked. So bottom line the women knew and wanted to get knocked up, they were stupid, and the guys were thinking with their little head, That's my take as a former player!