From an individual level, its a very powerful trait to have. Ensures the survival and future of both you and your spawn, even if the new men kill all of your children you get to replace them with "stronger" seed. Hypergamy is a very pragmatic system and there is a reason why its made it this long.

But its also immoral, destructive, and downright evil in most applications. And when allowed unchecked and applied by most women, it breaks apart all of society due to the inherent it working against the form of stability and cohesion necessary for civilization to continue.

Much like the common nigger, a woman is still stuck in an evolutionary phase long in the past. The flaw of the XX chromosome, its lack of mutability, makes them change far slower than men do and is the reason why literally every civilization ever felt need to impose limits and controls on them through society and law instead.