Ok

Some cultures permit incest so i come to not mind it

Well Actually it’s not a good thing in case there are genetics diseases (it’s hard to explain and it will be kinda long so here is an exemple) the X chromosome of both parents (XY for the dad and XX for the mom) is ill, the dad will have the disease and we can see it either with tests or physically, but the mom has two XX and usually when one X is ill the other X will function instead so the mom have the disease but we can’t see it physically unless she does a specific test ... Now those parents had children some of them had the disease it may appear physically or not (even if it’s a girl because if she gets the ill X of the mom, she will get two ill XX so the disease will be physically seen too). The children also had other children and then two cousins married each other, the two cousins have high chances of having the disease even if we can’t see it and by marrying each other their children will have a higher chance of getting the disease as well. So that’s why its detested to marry a relative.

what about the gay incest or those who are infertile that practice incest. there is no chance of a child so genetic diseases can't/won't be passed down, so without the genes being a problem and your morals what else makes incest wrong between two consenting adults.

Yeah, I've begun to wonder about that. The whole point of not allowing incest is the possibility of shitty genes being passed down, but if they can't, then isn't it fine? Is how I've been thinking lately.