*Where is the line between evolutionary attraction and personal taste (my dumbass messed up the spelling and couldn’t fix it)

From a biological point,

Women with large breasts and curvy bodies are universally seen as attractive as large breasts indicate fertility and health while wide hips indicate safe birthing.

Men who are tall and muscular/fit are universally attractive because muscles and height indicate strength and able to protect/provide

We have many people who have fetishes that contradict our biology.

Ex: there are men who have a fetish for older women (MILF/GILF) who are well beyond fertility and childbearing.

There are women who have a fetish for short and overweight/ non muscular men who would be physically unable to protect against harm.

So where does this come from? What causes us to ignore our biological instinct like that?