The opposite of good is not evil, the opposite of good is indifference.
If you cannot make a positive contribution, at least do not impede.
Evil doesn’t have to be an overt act; it can be merely the absence of good. If you have the ability, the resources, and the opportunity to do good and you do nothing, that can be evil.
What you don't do can be a destructive force.
I would never kill myself, but you can kind of let yourself die.
Pity is a benign form of abuse.
Like secondhand smoke, the leakage of emotions can make a bystander an innocent casualty of someone else's toxic state.
Personally, I think neutral is just another way of saving your own ass at the expense of someone else's.