I last had fast food, besides a few half Chic-Fil-A sands here and there, maybe 10 total over the years, and Chipotle if you count that, since 2012. I can't do it. I worked at Taco Bell as a kid in the 90's, and I would eat all I wanted on night shift. I have NO clue how I lived. It's beyond imagining.
I miss having the occasional "Cheat Meal", but the last 9-10 times I tired, I got WRECKED in bad ways, so adios. I'm better off for it. Although, I LOVED QP's with Cheese. Damn.