As crazy as it sounds, there are people who are adamant that In & Out is not just good relative to fast food, but in fact one of the finest places you can eat, at any price.
In the city I live in, a proposal for an In & Out came up. It split down the city in half for reasons; traffic, "In & Out is great", "In & Out is awful", and so forth. Nothing's come of it and as far as I know the lot remains defunct.
Elsewise I too encounter people who hold In & Out on a pedestal simply because of their food. Personally, I've tried and honestly but I just can't. McDonald's, Burger King, Wendy's, Jack In The Box all have better burgers and fries than In & Out for me, but say that to the devout and you'll be shown the door faster than they'll tell you to go to Hell. It's amazing.
Source: I've spoken with a few.