But it isnt weird to buy a loaf of bread for a piece of round metal or a piece of paper with a face in it?

That is all weird.
I do believe bitcoin cannot be the fiat of all.
It can be something. An internet money. Something no one should convert when they go to the internet to buy stuff.
Imagine that happening then online shops wont have to deal with questions like how much this is to my money and that blah blah.

That can happen. A higher possibility.