Move to a location where they do not have In N Out Burger and it will become more clear why it is so loved. I think you appreciate something more when you can't get it on a regular basis. Now, that will soon change as I move to CA for school! I consider In N Out Burger one of the perks!
To provide a clothes analogy: it is like Lattanzi. You either love Lattanzi or don't get why his shoes cost so much.
You obviously don't get it, which is fine. Give me a double double and fries anytime. If I am really hungry, make it a four by four!
No chicken. No onion rings. Nothing else. Just make a great burger, great fries, shakes and soft drinks and you are good to go.
We've got a place here called "Hudsons." Just burgers, drinks, and pie for dessert. Not even fries! Walk-in only. Cash only. A nice burger, not the "world's greatest," as they claim, but a nice burger.
I still prefer In N Out.