Your moral framework and thus your conclusions are quite parochial. They are characteristic of a. relatively small but elite portion of the world's population and a more recent worldview. In most times and places, actions that almost universally evoke disgust are considered immoral. They are considered an affront to human dignity or to the sacred. Jonathan Haidt has written a book called The Righteous Mind which outlines various moral "flavors". He has done research on populations from different demographics around the world and come up with very interesting findings. One finding that interested me is the difference between traditional American conservatives and traditional liberals are not that conservatives have different values but that they have additional ones. Anyway, harm is only one moral value and of course what we mean by harm varies as we know when current campus definitions that define speech as harmful. Anyway, Haidt's work is quite original and will, I think, add to your understanding of moral principles. It really helped expand my thinking.