Something just occurred to me. Perhaps guys don't pick people like their mothers; instead the wife starts acting like his mother because she gets more of a reaction when she uses the same signals his mother does, and over time she tends to do more of what works. I could see how that would work on women as well.
Now THAT is a very interesting line of thought ....
"Show me a completely smooth operation and I'll show you someone who's covering mistakes. Real boats rock." -- Frank Herbert