There's no objective measure of what's right or wrong..
There's nothing that's inherently good or bad.
We just call stuff we like or don't want to happen to us as good and label whatever affects this state as bad.
We don't want our children to be raped so we simply banned pedophiles.
We don't like when people steal our stuff..
Go on and on...
These are not inherent qualities of the action or the thing itself but results and consequences... For example.
If you don't care about global warming because you as a rich guy will not be affected by it (and do not care about who will) then you will not take any actions against global warming at all..
Humans do not behave in a way that will benefit everyone if there isn't something to gain..
This is the reality that we all live...if enough people believe that slavery is OK then slavery wouldn't have been banned at all...it's all about beliefs and not facts.
You as a human being choose what to believe and what's good or bad, that's why morality and ethics change with the tides of time.. There's nothing wrong with that but don't be naive, morality is just whatever society or you as person believe at the moment it has nothing to do with an intrinsic property of the universe.