Even for those of us guys that are monogamy oriented, we are not necessarily marriage + kids oriented to the extent we would choose someone we aren't extremely attracted to personality wise and physically just because she would make a great mother. I think the marriage oriented guys and girls are literally attracted to those traits more than interpersonal attraction itself. When I look at the women that would have been marriage material that I pushed away usually it was because they were just not intellectual enough for me. in a sense we are looking for some sort of weird Disney thing where we get Perfect Chemistry between two non-traditional people but no other obligations, and then we expect that type of girl who isn't even interested in marriage really to act traditionally.