I'm wondering why bitcoin was made if there are too many currencies in each country, why would anyone add or make a type of currency in the internet? For easier and faster transactions or so ?
I think you answer it already its a universal currency.
So yeah fast is one of the very important feature.
I think in future we will leave cash behind and only use bitcoin as currency around the world.
Well for other currencies there isnt a concept of speed though, if you want compare maybe compare to a bank