What we want isnt necessarily a bad guy, but we want someone with an opinion who doesn't just lose that opinion when it comes to women. I want someone who's going to go "So I thought we could do this...." rather than "I'll do whatever you want" aaaarrgggghhh!!!
Its along the lines of I want someone to pick me up, throw me over their shoulder and drag me back to their cave (in the hypothetical sense)
I don't think that's specific to nice/bad guys. That's just being assertive.