No. It was never meant to be a knight's job to 'clean up the world'. They only made a mess of it whenever they tried so hard...

Is that the way of your world? Again, I say pity. True chivalry is so much more than that. Yes, unwavering loyalty and servitude; but he is as much for the people as he is to serve his lord. Defend the helpless; strike down the wicked. Virtue and honor.

But perhaps you can leave those to the fairytales if that is what you truly wish.