You might want to define "single women living alone." Yes, females between (ages) 18 to 25 are generally fine with living alone, particularly if they are building their careers.... the same way men have always done throughout the ages. Women have the opportunity to develop careers, but that has nothing to do with a desire to "remain alone." In fact, most young women look forward to having a family. In today's world, very few couples are privileged enough, i.e., have enough money and resources to raise a family on one income alone..... but that is beside the point. If a woman has talent and has the opportunity to gain an education and a career, she should do so if she so desires. Again, that has nothing to do with wanting to "live alone."
If you meet a smart woman who delays having a family until she has, at the very least, completed her education or vocational training, you should thank your lucky stars.