Gender Roles?

Question...how big of a factor are traditional gender roles today? What I mean is we all know the traditional roles of a man and a woman. The man is a provider, goes out, makes the money, brings it home to support the family. The woman takes care of the home, the children, cooks, cleans, and supports her husband. However, today there is a lot of role reversal. Today we have house husbands and working women. Of course there is nothing at all wrong with that, but is it possible that even without knowing it we still hold true to those old roles.
The situation that brought me to this questions was a guy who doesn't work, he stays home each day and takes care of his two children. His girlfriend works full time and supports the family. This worked for a while, but the wife eventually started having a thing for a guy at her job and ended up cheating on the boyfriend. It made me wonder if maybe the fact that her man was pretty much a housewife played a part in her cheating. Do women subconsciously want a man that is able to provide for them? Even if we have our own jobs and make our own money and don't necessarily need a man to do those things, don't we at least want someone that is capable of taking care of us if necessary? Or have we evolved past that?
Men do you generally want a woman that is a good homemaker? Even if she does have a great and flourishing career, do you still want her to be able to cook and clean for you. Do you still expect her to put her career aspirations on hold to have kids? Is it still expected that she would give up her career or whatever to follow you wherever life may lead you? If you had a woman that didn't do those things would it bother you. If she preferred to eat out instead of cook, to hire a maid instead of clean, to hire a nanny to stay with the kids so she could go back to work sooner? Would this effect the level of love and commitment you had to the woman?
Overall I wonder if we are hardwired to expect certain things in a mate. And if we find a mate that does not fit into or chooses not to fall into these traditional gender roles will we inevitably stray away from them?