This is a common trp trope I see repeated on here and it has no basis in reality in my opinion. There isn’t a single women I know who has gotten into a relationship with a man she didn’t find attractive just for money or resource. There has been some exceptions of course and most of these women were blatant gold diggers with a certain mentality that anyone would half brain could see what their intentions were.

The average couple today will spend at least 4-5 years before tying the knot. It’s not like we are back in the 50s where it’s normal to marry someone after knowing them for just six months, which would make it easier for a women to pretend to find a man attractive just to get a wedding ring. 4-5 years is a long time for someone to be with somebody just get their resources or money, only hardened gold diggers could pull that off which most women are not.

What’s more likely is that after couples marry, life happens, they get old, they start having kids, they spend more time at work, they get stressed with daily life etc, which causes them to lose their desire for sex. This is unfortunate but perfectly normal and doesn’t prove the existence of betabuxx. Stuff like this happens to men too which is why the deadbedrooms subreddit is at least 50% women. There is a reason why married couples in their 20s report having more sex then married couples in their 50s.

So in short, the decline of the frequency of sex in a relationship can be due to a multitude of factors that aren’t solely related to women are marrying men they don’t find attractive.