it is might makes right. look around you.

overpowering another individual or species is the epitome of life. the pinnacle of existence. Just because humans are romantic doesn't mean their petty moral justifications reflect in any way on nature's doings.

intelligence needs to have a definition. the broad universal definition is learn through habit or repetition in order to ensure owns survival. Every aims towards there. whether it is done through RNA or epigenetic processes (aka environment) is irrelevant because it all ends up to the same purpose from the same exact parameter.