What they tend to piss away isn't necessarily their money but their opportunity for the husband + kids lifestyle. That's because a lot of women refuse to settle for 1 man in their early 20s since they can instead benefit from many men. Instead of 1 overseas vacations every 5 years if she stayed with 1 man, she can get 2 per year if she has "fun" with a couple different men each year who all take her on 1 trip each. And the good looking women are in fact doing this while they're young because they see it as their birth right for being good looking young women. The problem is that by the time they're ready to settle-down for the modest 3-bedroom house, car and kids lifestyle the successful men don't want her anymore. Worst of all though, her previous experiences have heightened her expectations such that she comes off entitled and overvaluing herself. When she realizes she can't get her overblown expectations met, she becomes jaded and starts to hate men.

If a vicious cycle. If women, when they were young and hot, simply picked 1 successful and quality man then supported this man, they could easily have the 90s middle-class lifestyle. For the most part, women don't want this lifestyle and by the time they decide they do, it's already too late for them.