Euros, South African Rands, New Zealand Dollars, Hong Kong Dollars, Polish Zloty, Malaysian Ringgits.
It is no longer just the US, EU or even China driving adoption. There is a market for Bitcoins in major countries all over the world.
When it comes to the world of internet, yes. Bitcoin is the only reliable and most common cryptocurrency in the internet. This is why most probably people around the world prefer to use it. Hopefully, others will realize this too because it's for their own good.
Bitcoin is not cheap anymore if you will compare with the fees on altcoins, the bigger the value of bitcoin increases, the more it's become expensive to transact.