It is a good place to study why it is unhealthy. You can go eat in Burger King with the intent of making it at home. Then you will notice it is almost impossible to make it at home because you need tons of chemicals and additives and synthetic foods which is normally not available at home. And you need high pressure, high temperature industrial grade machines and toxic solvents to produce those denatured things like cooking oil.
The Whopper when it was grilled was very good. Onion rings were awesome but their french fries were tasteless. I haven't eaten any fast food since 2006 due to my Diabetes diagnosis. When I did eat fast food, Wendy's was my favorite. Their bacon swiss cheeseburger was very good. I used to get the chilli as well. The Wendy's in Piedmont, CA I used to go to had a mini salad bar which was pretty good. When I was kid and played in Little League baseball back in the 1970s the coach would take us to Burger King and sometimes Hardee's which had a very good grilled burger. When I lived in Rego Park, Queens, NYC in the early 1970s the go to place was a small chain called White Castle. They used to have these tiny square burgers with small pieces of onions. It was pretty good.
consider i just paid $16.07 for a warm bowl of kale salad with white chicken meat for lunch at chopt, some fries would be good. who eats lettuce these days?
I once ate 30 White Castles after drinking a 12 pack of Strohs beer. I was 18, and the ensuing projectile vomiting was epic.