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Originally Posted by Iridi
Why is it creepy? Because it's a cultural taboo here in the U.S.
If you'd been raised elsewhere, it wouldn't be creepy at all...
Barring education, why is it creepy? The chances of genetic deformities aren't nearly so high among first cousins, so it's not even as evolutionarily disadvantageous as immediate-family incest (though it doesn't mix the gene pool sufficiently, and more importantly the social pool...)
X is a man, Y is a woman, the two should get together, no? 
[and no, I'm not going to hit on my first cousins either... it's too creepy...] |
But even though they're first cousins, they're still related and there is still a higher chance of bad genes being passed down to the offspring. Even if it is not immediately passed down to the first progeny, it still remains in the gene pool.