Well, damn if you do, damn if you don't.
Remembering the wikileaks case, if a man tricks a woman to get her sperm into her, that's wrong (with which I agree), but if a woman tricks a man to get his sperm into her, he should have been more careful?
No, when it comes to pregnancy and kids, it's a woman's world in the West.
Joint property is perfectly fine in a more traditional marriage. Try disputing it in Japan where women are still expected to quit their job when a baby comes along, stay out of the job at least until kid is 4 y/o and then be expected to take a part-time job at most. Many of them want just that though, just as many men want their wife to take care of their kids, have a perfect household while they earn the money. Prenups are certainly fine nowadays if both parties are in the clear what they are going to be giving and taking from that marriage.
