Completely spit-balling here, but has the Tinder phenomenon made sex into something completely transactional? Last time I was in the US, I stayed for a few weeks with GenZ'ers who were attending university and they told me that's basically what Tinder gave them that wasn't there before. At least, not at a large scale, accessible to anyone: sex without commitment at the click of a button. Not sure they were exaggerating or not, as I did not get to experiment myself. My only Tinder experience led me to make a friend in Spain~~

EDIT: All this to say that if sex is transactional, you never got to know the thrill of building the relationship that led to sex in the before times. So, you don't know how to have a romantic relationship.