@MsTSwift
Ime like marries like - dentists marry dentists lawyers marry lawyers etc. The film Pretty Woman trope of suave millionaire falling for a prostitute or shop worker are not realistic!
At university, as an undergraduate, the ambitious, prettiest girls mainly wanted to date medics. Rather a lot of the medics I knew went on to marry other doctors. A lot of dentals dated other dentals. Some of us law students had a distinct preference for other law students, medics or dentals, and looked down our noses at anyone else. Student life! I remember having a particular arrogant arsehole of a computer science boyfriend and standing up to him one day and dumping him, telling him that he wasn't good enough for me anyway and I would make sure I stuck to those doing professional subjects like me in future. He deserved it though, and I didn't really mean it.
But dental, medical, law, etc students are often quite ambitious - thats why they are doing those subjects - and have a life plan which doesn't involve getting derailed by lots of different girlfriends or early divorces.
Of all the very wealthy people I know (wealthier than your average doctor, dentist, etc), very few are divorced. Affairs and divorces are time consuming if you're running a successful business, and quite often a wife helps run the business or keeps everything ticking over, and the couple are like a well oiled machine. Celeb types, or those who court it, are often different and prefer the younger second wife type.
In fact, of the handful of men I know who do mess around with different women or who try to get younger girlfriends, they are all spectacularly unsuccessful and quite low achieving. Even if they do appear wealthy, they quite often have massive debts and the only swanky thing will be a car bought on finance.