Alicorn gave an excellent summary. But there's another issue also. When people say this sort of thing it is often with implicit premises that it is a massively important part of a woman's life to get married, to an extent that doesn't exist as much with men (with exceptions to some extent to certain ethnic and cultural groups which emphasize grandchildren). If you scratch this sort of thing beneath the surface you often find beneath the surface something like "Women exist to cook, clean, and pump out babies. If they go to college it should be to get an MRS degree."