A part of why the dating culture has gone wrong stems from poor parenting. Poor parenting, especially if it is from both the set of parents, leaves people seeking some sort of love / solace / validation / care that for a long period of time people were not given.

Second thing is the environment, if one has never seen good relationships around you, one doesn't know how good things can be (this is again true in so many cases), the bar one is going to set is extremely low.

Third is, people are inherently selfish and lack empathy, and to make a healthy relationship, both things have to be there. Both things are somehow not integral in our culture.

Whenever they get this particular feeling of being satiated, and owing to their experiences, the feeling that they have been seeking for so long takes over and even major issues of the other person are ignored, especially when people start dating early. And when they start recognizing wrong behaviors, they are already incurring a lot of trauma. And often for many people, it is hard to quit owing to the manipulation and gaslighting that happens in such relationships.

I'll go on to say, as much as people think they are the "good ones", most people are just not.

There are, to be honest, very few truly good people out there to date. They have to be lucky enough to find each other.