I'm not sure about that. Absence of cowardice (also known as self-preservation) will severely limit what people allow to do to them. This includes limiting all

I'm not sure about that. Absence of cowardice (also known as self-preservation) will severely limit what people allow to do to them. This includes limiting all the things that you listed as worse than cowardice. On the other hand, lack of fear will empower ideologies that employ suicide bombers. Also it will make nuclear wars much less unthinkable.