Well, human beings instinctly act on behavior that have some kind of common sense of what's good and bad. Stealing is wrong, killing is wrong, harming others is wrong, etc. When we think of "bad" that should come to mind.
I'm sure if I tell you to be "good" and not bad all the time, you'll be a more better person, even if you do not really know what it is. It's instinct.
I deal with people on a daily basis that don't see things the way you do, or indeed cannot help but do things opposite to what you suggest.
From an open minded perspective I can see how things will escalate from there -
because of what is or isn't "good" as you see it.
As an example let me offer the following:
You believe murder is not good. Someone I personally know cannot make that distinction, because - in simplest forms, he is not well. This man then proceeds to kill your entire family. As a result of his inabilities, you then seek revenge and kill his entire family. While it might not make you feel much better -
every little helps, as my good friend Tesco's would say.
Thus we are left with a dilemma... Was your killing spree any more or less moral than his? Let it be said that he did not understand what you do, and thus your killing spree is instantly worse than his. He did all that he understands, you went against what is good or bad with knowledge of what that good or bad entails - and yet your killing is justified.
While I certainly understand "two wrongs don't make a right", I have yet to meet one person not murder, or attempt to murder, the person that raped and killed their child/wife/mother. In this instance is killing bad?
Everything else has it's equals, but murder was the most pertinent example.
It's upto you to make the decision.