It's not exactly prostitution --it's a kind of mistress arrangement, a little like the, "mutually beneficial relationships" that you now see advertised on Craigslist so often.
Ummm...a lot of women put off marriage, then later they're not pursued, and then it's easiest to simply scream about all J mean being, "grass eaters".
Naw a lot of the J women who pass on a young man and go after the older guy are simply being PAID, and it is a pattern as old as the hills --sometimes the payment comes in the form of clothes, handbags, and vacations, but often it's actual cash, with some type of very good excuse added, for manners.
We older men are often not only more financially stable but emotionally stable. There are very few young men who would qualify as ‘a man in full’. And a man in full knows how to appreciate a Lady and love a woman’s company.