This is a dicy ground to enter. As Voltaire said about God, same goes for absolute morals. They ought to exist because without absolutes society is liable to

This is a dicy ground to enter. As Voltaire said about God, same goes for absolute morals. They ought to exist because without absolutes society is liable to collapse. That does not mean that absolute morals exist just that we sort of pretend they do. Take any human behaviour and you will find pros and cons in the good/evil category. Liqueur/weed laws, sexuality laws, voting laws, slavery laws, etc etc etc. Extreme example. Bio-hackers release a virus which manages to kill the whole of humanity on Earth including themselves. Evil/bad absolutely? Certainly bad for humanity if there are humans left on other planets. But otherwise the question is meaningless to humans. All morals are localized to time/space.