I don't look at other dating sites but I can imagine. Women looking for husbands because they're desperate or need a visa to get into a country or whatever. ..
Anyway..that's not my style either. Like you I'm rather old fashioned and wouldn't want to rush into such thing.
As you say, similar interests is not quite enough. I have found that after a while I was the one who had to make certain sacrifices -like giving up my French or Spanish friends because he couldn´t understand, certain activities (meditation and the like), giving up having my own space etc. which I could do while he was busy reading or playing bowls, or visiting his own friends, and even time table regarding meal times and also my vegetarian diet!
When you´re young you can adapt to each other and grow together. However, when older, you are much more settle in your own ways, why should you give it up?... for love? And why should it be only a one-way street?
RE: The Female Anatomy
You mean the Italians Cat. And the French too of course. But I'm only speaking from what I heard as experience I have known.