Hey yeah I get it completely! Really, I know first-hand. I always say...
"If something or someone is negative don't go as often and don't stay as long. If you can avoid going altogether then do that."
This goes for family too in my opinion.
Sometimes people get to a point that it is better they are out of your life. It's a brutal decision, but one I'm able to make. As long as one is comfortable with it then so be it. I've done it in the past, reversed it and reinstated it...That's part of the choice we have to make.
Thanks for your comment, it's an important thought.