1) Sorry I didn't list other reasons in order for you to understand that there is more than one reason it's done. 2) You bringing up feudalism is still completely random lol. I get you're trying to make the point "just because something was done in the past doesn't make it a good idea", but the contrary is also true - just because something was done in the past doesn't make it a bad idea. Using your logic, I suppose we should stop cooking food since it was done in the past and everything done in the past is akin to feudalism lol