You assume that the strong would do evil. It takes strength to overcome evils and enforce goodness. Strength is neutral and required by Good and Evil. The mightiest will prevail.
"I AM STRONGER THAN YOU, THEREFORE, I MAKE ALL THE RULES."; MIGHT IS RIGHT ADVOCATES AMORALISM AND PSYCHOLOGICAL HEDONISM. IT CONCERNS ITSELF WITH THE NATURE OF STRENGTH, THE RIGHT OF CONQUERORS AND THE FALSEHOOD OF NATURAL RIGHTS AND HUMAN RIGHTS.