As in:
“We spent an incredible day at the beach.”
“You are incredibly beautiful.”
“She earns an incredible salary.”
Incredible means “unbelievable, unable to be believed”! What makes a trip to the beach unbelievable, especially if it’s a sunny day?
Personally speaking, I can believe how beautiful you are, but why would anyone say they could not believe it?
And large salaries are not only within the area of belief, but very satisfying to earn.
Come on, listen to yourself and the words you use. And believe them. I find it entirely incredible that U.S.-ers cannot grasp understanding of the language they grew up with.