I think the key here is the word "Adult"
I was thinking about the adult men and women that I know, and it seems that all of the men tend to have to borrow money from their parents more often than the women that I know. How about borrowing money from their parents?
EDIT: I just thought of something else. I was watching PBS and they had Suz Orman on talking about women and money. Apparently women have a poor relationship with money compared to most men and don't invest as much as men do, so men tend to have stronger financial portfolios than women do. So investing money?