Dear Marc, did you go see the Darwin exhibition at the Museum of Natural History? You don't have to, I'll give you the highlight of the show right here. The man, legendary for his apt intellect worked like the rest of us when faced with a tricky situation. He made lists of pros and cons.
This is what he considered as pros as he contemplated marriage:
"Children-(if it Please God)—Constant companion, (& friend in old age) who will feel interested in one,—object to be beloved and played with.-better than a dog anyhow.—Home, & someone to take care of house-charms of music and female chit-chat.—These things good for one's health.-but terrible loss of time.—."
The appeal of female chit chat proved succesful. The famed scientist married his first cousin and multiplied with her. But from a genetic point of view, wouldn't marrying your first cousin be somewhat of a backstep?
You're not into that kind of thing are you? I just think it would be strange to have my grandkids marry each other.