I feel this! I can't say patience was ever a virtue of mine. I'm generally a very sweet and giving person, but girl, I have road rage, and pedestrian rage like you'd never believe!
And, I have no tolerance for bullies. I've also worked in customer service and when I see someone bullying a waitress, clerk, etc., I can't stop myself from intervening. I'm polite -ish. I've elevated bitchdom with a smile to an art form.
I haven't come to blows with anyone, and the older I get, the more chill I seem to be getting, but the worst for me, as far as patience goes, is when someone messes with one of mine. Hurt my kids, my husband or someone I hold dear...we got problems, and by "we," I mean whomever is doing the hurting. Loved your story as always.