I don't understand it, but I can eat the same thing at home for breakfast every day of every week for years and not get bored of it. If I ate at the same restaurant every morning, I'd be sick of it before the end of the week.

Who says you would have to eat at the same restaurant? When I was always eating out I was going to multiple restaurants. I avoided going to the same place too often so I wouldn't get bored with it.