I literally found zero use cases. I pay everything in my life with fiat money. I even receive a cashback on it, instead of having to pay for fees (yeah I know, they put that on the products directly).

Do you maybe have some ideas, apart from "using bitcoin at a store" (I would only consider this option outside my country)? I get the "using bitcoin" thing in 3rd world countries with tons of inflation, but maybe there are some cool use cases even for me, who doesn't need lightning to pay anything and only ever did it as a gimmick, like "heyy you support bitcoin at your chicken stand! Let me try it!".