divorce and separation are going down.
but so is marriage and relationships.
the stats are basically, if you are educated and wealthy, you are likely to be in a stable relationship and it is likely to not result in divorce.
if you are not, you are not likely to be in a stable relationship, and you are more likely to divorce if you are married.
marriage and relationships very much parallel the K shaped economy. a huge component of your desirability and romantic stability is your economic security.
also why so many young folks are failing to couple up, because they can't get economic security necessary for their relations to be stable.
even in my own dating pool of highly educated wealth folks... many single folks are razor focused on economics first and foremost, and will not consider a relationship unless you are in a top 5% economic position, which of course means they have very few people they could/will date. I meet many folks who make 200K+ a year who feel financial unstable and are very vocal about their need to have a partner to stabilize their finances for them.