I ate at chick filet once, I didn't really like it. the bun was crappy as was the wilted leaf lettuce. The fries were ok but very few of them.
As for the others I wouldn't eat that stuff on a bet. I think that that is the problem here today with overweight and sick people it is from eating at those fast food places.
The food is heavily processed and who knows what it is made of, to keep the prices so low none of the ingredients can be very good quality and all the preservatives and flavorings can't be healthy either.
I mostly make what I eat, my only weakness is once in a while I will get a few crunchy beef tacos from taco bell or a hot dog at Costco.
Other than that the only time Igo to a fast food place is if I am on the road and need to pee.
There is an old joke about mc donalds, a Manager was being interviewed about the 50 million hamburgers sold and he was asked about how much beef was used. His reply was about 50 pounds.