I think your mum understimates the quality of women out there. 20th century is over and the house wife mentality is slowly coming to an end (at least in the western world). A girl has a lot to contribute to relationship these days, not just kids. I can see why it can be difficult for women these days, finding that balance between kids, family and a career. But the fact is they are out there trying to get that balance right. For a guy it's just a matter of searching and finding one of them (While weeding out the minority of free loaders out there).