[Dominate]

Ew. Lol.

I don't agree with your reasoning though. "Cases where it's ok are uncommon so we'll just disallow it generally". There's a bunch of other situations where that logic could apply.


Back to the disease/genetics thing, I just picked cancer & heart disease as two illnesses I know genes are a factor in. I know very little about this so I'm gonna abstract the hell out of it for the argument's sake.

Say we have some way of knowing that if a particular person makes a child with another person from some subset of the population, that child has a high risk of having some serious illness. Should there then be laws prohibiting that person from marrying or fornicating with people from that subset? What if the person is only attracted to people from that subset, and/or loves a particular person from that subset? Should their union be denied?