>>10233651There's such a thing as too much genetic variability just as there's such a thing as too little.
Mixed race people are way more likely to suffer from deformities if not just die as miscarriages. The sets of genes that determine vital parts of ourselves can be different in genetically distinct populations, meaning your kids are more likely to fall short of them.
Also terminally vulnerable if they need blood transfers or organ donations, mixed race people can frequently die as the organ they'll need can be a combination of tissue and blood-type that virtually noone else will have, not even their own siblings.
ofc I imagine these dangers decrease the more genetically similar the parents are, so like a black-white mix is more dangerous than an asian-white mix which would be dangerous than an arab-white mix, etc.
And then there's the psychological identity problems but that's a whole other story.