As a man, I'll echo what others have said:
Someone who has friends who let him live his own life. Someone trying to impress his friends with his manliness is probably going to do what he thinks his friends want, which isn't good if he has those types of friends.
Someone who is confident in who he is and is willing to stand up for what is right, even when it is unpopular.
Someone who knows who he is and isn't trying to prove he's straight or not gay. A closeted gay who is trying to deceive himself about his sexuality would be a very bad choice (for any woman).
As for a womb, plenty of guys *don't* want kids and would consider it a plus if their wife/girlfriend couldn't get pregnant.
I'll also disagree that clothes and feminine looks are important for the gal to attract a decent guy. Plenty of non-models find someone. If the guy is confident in himself and willing to do what he wants (instead of trying to be some sort of stereotype of a man), she won't have to be stereotypically feminine anymore than he'll have to be stereotypically masculine.
For me, finding someone who I enjoy spending time with was important. As great as sex is, there are other parts of the day too.

I wasn't looking for a trophy (even if I got one!), I was looking for someone to spend life with.