I certainly didn’t say anything to preclude that. In fact unless the woman is certain of the man, she should control her own contraception. The consequence of a mistake falls disproportionately on her and, well, men are pretty much all assholes, even the well intentioned ones. My message, though, was for men - not for women. Vasectomies are a man’s choice, and the only one we can make that fully insulates the woman in our life from the consequences of sex. Any other measure a man can take is pretty poor in it’s effectiveness.