Chivalry:nature vs nuture

I've heard the argument that men are hard-wired to be chivalrous toward women thus protecting them but I wondering if that is all bunk. If being chivalrous is hard-wired such as breathing is then why do MRA's exist? If the preceding is fact it would be impossible to be an MRA because men would not be able to resist being chivalrous anymore than they can resist breathing. Also take into consideration it is women who condition the young boy to grow up to embrace chivalry,often through repeated reinforcement. When the young boy cannot or will not acquiesces to their demands then they shame him to make him comply and it is through their shaming that they reinforce chivalry. The conclusion we come to is that chivalry is a form of subservience rather than a form of power. We may look at the man guarding the woman (white knighting) and conclude that since he is physically stronger he has the power. What very few people do is realize that the woman in question may have used manipulation (reward/shame) tap his "protect women" programming that was propagated to him when he was a child. So let's take a look at it again: the man is guarding the woman and some will say he has the power. Others will say she goaded a stranger to fight her battles for her and she has the power. Who really has the power: the overt or the covert? Let me put it this way: Who has the most chance of getting injured or kill?  Who has the best chance of walking away without a scratch? That should tell you who has the  power.