Personally, I believe that it's completely wrong to make such generalized categories, like men and women, and put people in them. I don't think that because some of the most famous novels from women are romances, that means that women write only about the themes you referred. What about Harry Potter or To Kill A Mockingbird? These are books written by women. What about the books of Virginia Woolf? I haven't read any, but as far as I know, she didn't wrote romances.
Also, I disagree about emotionality, it's another generalized conclusion, like the impression that men can't be emotional. Personally, I'm quite emotional, but from what I've seen, there are females in this forum that are not so moved by books about love. And there are male writers that have written about love, like E.M. Forster or Ian McEwan.