Is this to say any sort of aggression is bad or ? Cruelty means a line or more has been crossed but aggression doesn’t have to be imposing does it? Sporting comes to mind where attacking at the right moment is rewarded and solid defence is required (usually) and this is all done in the pursuit of happiness now, mostly, I would say. Our bodies are made to move and do things; can there be no remnants left of the survival tests our ancestors had to endure, in the pursuit of some far off ideal?