Also he wasn’t using shaming language he was just asking why. Case is closed. People want different things for their lives. The idea is that the younger a girl is the more they will look younger longer. Fertility is imo relative depending on the age as you can usually have a decent amount of eggs in your early thirties and even beyond depending on health. So that one is stupid imo.
As for personality some 18 year olds are mature to an extent. But your brain hasnt fully developed then. I think this is why men like it, they can “condition” a women on their terms. Other men prefer an arrangement based on equal stage of life and shared life experiences. This is why a lot of men prefer closer in age. Really, I see both sides to this: