If you grow up in California, In N Out is a staple amongst the fast food burgers. In N Out just IS. It has a specific taste that sometimes we west coasters just crave. I know there are indigenous cuisine from the East Coast that we may not understand, but a burger and fries from here simply cannot be substituted by anything else.
I'm a fan of the fries because they taste like potatoes, sometimes I think people don't want their french fries to taste like real potato's and in that case, go somewhere else ha ha!!!
Nothing can replace the goodness of an In N Out burger, one must experience it!