It is good or bad?

It's relative notions. We can't say that something is good or bad, because for other people it can be something different. This is just our opinion. We can believe that is right but your friend believe too in other thing.
I just tell I approve kill but my grandmother say that is really wrong. But she doesn't know that I mean kill for instance paedophiles or terrorists. She can't see it, she just imagine that people stay with a gun in hand and shoot to innocent people. That's way we can't say what is good and what is bad.
We can argue with others about your arguments but it is impossible when second person persuade himself opinion. But I think you can try.