Senoufou, I love you!
When I first came here, it was a wonderfully supportive place. It was safe.
Now, it seems to be a minefield, with a small number for angry people who come here only to do battle. Like most other places on the Internet.
If we don't want to be a part of that culture, we simply don't give in to the urge.
There are still good things.

It also really helps to remember those angry people may be going through something bad, and it doesn't make anything better to try to make their lives even harder.

In the original post:

They know they aren't worth it.
That may be the problem. Or maybe they don't CARE if they're "worth it". Love doesn't mean muuch.

You have to know they aren't worth it.
no...NO!

What they DO isn't worth it. THEY are. People can learn. People can change. If they bother us, we can avoid dealing directly with them. There are a lot of reasons why people behave badly. Raising the stakes and lashing out at somebody who's in pain generally just makes everybody unhappier. I don't have to like everyone, but hatred and anger are more damaging to ME than other ways to feel.