You must be up north
Down south you put tomato on a burger
And Mayo and mustard....Dukes Mayo preferably
Ketchup only on scrambled eggs...and Tabasco
I don’t care how folks dress their food
About two years ago I moved way up north to Birmingham, AL from southern Louisiana.
I like ketchup with fries. I'll eat ketchup on a burger, but prefer sliced tomatoes. I slop the mustard on, but can't take mayo on a burger, much preferring horseradish instead.
Ketchup is just used to flavor stuff. If you put them on scrambled eggs, all you taste is the ketchup. Even on a burger it kills the taste.
If you cook with seasonings, you shouldn’t need to cover the taste with other stuff.
Condiments are supposed to enhance the flavor.
I honestly don’t get the least bit concerned that my wife puts ketchup on the omelettes I make for her. Well, I do. I just stopped mentioning it.