This has to be the world’s most annoying thread; cousin marriage is actually really common!
In south India, where I’m from, cousin marriage has always been really common, till the recent past when some combination of Brit control, north Indian cultural dominance and urbanisation changed the norms.
I know people whose grandparents married their cousins. And, surprises galore, these people are not possessed by a singular will to always be eating.
Literally, open the wikipedia page:
“According to Professor Robin Fox of Rutgers University, 80% of all marriages in history may have been between second cousins or closer.“
“Charles Darwin and his wife Emma were first cousins.“ And then their descendants have done so much awesome shit that there’s a really long wikipedia page about them.
I mean, come one guys, find it icky as you want, norm-mandated gut reactions aren’t subject to reason, but at least open the wikipedia page before prophesying the death of society.
Something doesn’t have to result in the total death of society to be a bad idea.
According to that same Wikipedia page, Europe banned cousin marriage as a continuation of Roman law. What are the GDP/caps of nations with low cousin marriage rates vs high cousin marriage rates? Why did studies find an inverse relation between cousin marriage and Democracy?

Then, of course, there is the Genetics section of that same page, which, while it might not have much issue with the first generation of cousin marriage, makes it clear that it can become a problem if it’s ongoing in a population.
I mean seriously man,
The report states that these children are 13 times more likely than the general population to produce children with [recessive] genetic disorders, and one in ten children of first-cousin marriages in Birmingham either dies in infancy or develops a serious disability.
Do you have any idea how much money that costs? And more importantly, the wealth that money represents? We might as well create ten thousand tons of steel and throw it into the sea.
It’s noted that it could be due to other factors of population-limited breeding, but that means those other population-limited breeding norms should also be removed.
I’m just not seeing how social advantages outweigh it at the current genetic technology level. It seems much wiser to head off these problems before they start than to spend tens, possibly hundreds of thousands of dollars on medications and possibly later cybernetic prostheses.
And I can’t leave it as an individual choice due to political reasons - the dominant Western morality won’t allow increased medical fee taxes on the child for something the parents did. If it’s allowed and becomes widespread, somehow I am going to have to end up paying for it.
I don’t actually care to heap scorn on Darwin. That isn’t the point. I don’t trust people to be judicious without the taboo, and the taboo cannot be restored once it’s gone.

