guys with big tiddies, why?

What is it with guys with big tiddies that makes them good? I'm not saying that all guys with big tiddies in mangas/hwas are automatically good, some of them maybe an asshole but in most mangas/hwas that I read, they are always great; physique and personally alike.

Is it a psychological thing to like men with big mommy milkers? Is it the same thing as when bitches and bros and our non-/binary hoes likes women with big mommy milkers? Is mommy milkers something made to be that well liked? Is getting stepped a universal bonus when you like big tiddies? Is this bad?