And much of it depends on the type of society this happening. In male dominated middle-eastern societies where often times a woman is valued less than a cow or a camel, I’m sure all this finessing about between the sexes would seem ridiculous.

In western societies a sharing of the same interests is a big deal. Let’s say two religious fundamentalists fall in love, marry and all is great until one day one of them goes off to college, becomes very worldly and realizes that religion is a bunch of hooey, but the other remaines a true believer. So if religion had been the foundation of their relationship, they will split.