@trapdoor

Only if the old man is prepared to support it, and even court-ordained child support is not enough if the girl can't work (because she needs to finish school.) It's one thing if the girl is in a long-term committed relationship in which the older boyfriend is willing to support and raise a child; but up until about the age of 26-30, most guys I suspect just want sex with a hot young thing. They're not looking for committment, otherwise why choose someone who can't even support her own life? And if a guy is 30+ and having sex with a teenager 17-, there's something much more fishy going on.

Additionally, as I'll probably tell my daughters, I'm okay with you having sex with your boyfriends once you have a drivers' license and a car, cause then you can get yourself to a job. And frankly, if your boyfriend is so committed and loves you so much, why can't he wait one year or two to have sex with you?