I find this topic very interesting. My thoughts on this, as I won't ever read this thread again, I want to get them all out, for the most part.
Women whine about 'being equal', wanting to be allowed the same jobs, or positions in a company, being able to be just as successful in the economic world as a man, they also want to be able to play the same sports as a man, on the same teams... so, they pretty much want to be the exact same as a 'man', in a way. So, why not let them? Treat them the exact same way you would another guy, they want to join the football team, let them, and don't hesitate to slam them to the ground, they want to work in the stockmarket, let them lose all of their money, they want to hit a man, let them get hit back.
But then again, you have to remember that women are physically inferior in every way compared to a man. They aren't built like a man, they simply aren't made to be able to match a man in sze and strength, therefor you have to respect them as a woman. Sure, they might hit you, but when they hit you, it's more than likely in a playful manner. And when in a case such as that, hitting the girl back is unacceptable, and should be punished by you having your ass handed to you by your peers.
So really, hitting a girl for any reason other than her actually punching you with the intent to harm you is a pussy move.