Went to In&Out burger in Las Vegas 4 years ago. The first time I was ever in there, was good.
2 years ago in Vegas my son took me for a Fat Burger, first time for that too, was also good.
We don't usually eat fast foods. they have Burger King, McDonalds, Pizza Hut, Subway,and a few other chain stores here in Budapest where we live.
If we do grab a fast meal it is always at a Gyro shop. They have a spit of meat and cut up fresh veg's. Just drink a water with it, hardly ever drink sweet soda drinks.
When we visit the US we still mostly cook at home but do go to Taco Bell once in awhile, I remember their food to be good but usually am disappointed after ordering. Just doesn't taste the way I remember it did.
Here in Budapest you can get a meal at a lunch counter, say nice stuffed cabbage, 2 large ones with sauce and a piece of pork meat for 600 HU forints. A burger here costs about 1,200 and more for sides.
Why would anyone eat a processed burger when for half the price you can have a home cooked style meal.
There are many reasonable priced places here to have a fresh healthier meal so usually only tourists or young people who are meeting friends go to fast food burger places here.
The tourists are afraid to order in a local cafe because perhaps they can't read the menu and the kids go to fast food because they don't mind if they sit there all day long with one cup of coffee.