This is a bit off-topic, but I'm curious about what other think here.
I like the aesthetic of US cash. I find it elegant and pleasing. It was better before they made all the heads huge, but I have learned to live with it.
I cannot stand the off-sized, party-coloured money in Europe. I don't like how it feels in my hand, and I don't like how it looks, at all.
I suspect that I am in a very small minority!