I’m sorry you’ve had a hard time. Can you imagine how unhappy those people are in their lives? I feel sorry for them, but like you, I don’t wish to surround myself with them.
I channel a group of Archangels, and I asked them how I should deal with difficult people who are closed minded and vindictive. They told me it was best to not deal with them at all, to leave them to higher entities. Your black hole analogy is quite fitting, I think. You can’t reason with unreasonable people. Wish them well and go on. You were right to send them on their way. In doing so, you protected others. Good for you!