What's her value? Does she worth more than a fuck? Isn't fucking a woman a hobby,a sport for us men? Like hunting? So, do they worth more than that? Should we care about them more than that?
Look around you. Most, if not all, of business, art, architecture, and society - men built it all either for women or, to some degree, through inspiration from women, be it either a girlfriend, a wife, a lover, a crush, or even for the woman that resides within each man - his Anima.
Women or Sexual transmutation are the closest thing to a human hack, a human game shark. Ultimately, it is man's denial to achieve the one thing we have. That is ourselves, our legacy.
The key here is being aware of it. The smart people build their legacy by wifing up their girlfriend for the "small people", which is society like us. Search King James. It doesn't necessarily a need to marry in today's world, because "value" is what people want, not the relationship. The smart people cheat with their wifes cousins, friends, coworkers.
I am not sure if the word "smart" fits in but more of being aware of your value.