It’s already effectively been done away with, and it would be a multi-year societal change to bring it back. I’ve been living in Sweden for four years, and I think that’s about the same number of times I’ve even seen a coin or note.
It's far more common in the US and I certainly see it on a regular basis. But, personally, I'll go months without using it and if I'm driving somewhere I'll have some cash in the car but don't usually carry it on my person.
