Ouroboros
Coincidentia oppositorum
I have a whole bunch. Mostly for the same reasons as mentioned above. But more than anything else, I have an addiction for getting into flaming wars, and I don't want to anymore. So if someone irritates me and annoys me to such a level that I just know it will be too tempting for me to get into it again, I put them on ignore. It's basically to avoid the triggers for my own addiction.