I think many developed countries already use bitcoin as a means of payment transactions, for example in Japan, the United States, Denmark, South Korea and Finland. In Indonesia bitcoin is an illegal currency but there are some places in Indonesia that are willing to accept bitcoin as a means of payment, as in Bali there are some money changers that accept bitcoin as a medium of exchange, there are also several cafes and some Bitcoin ATM machines which are in Ubud, Kuta and also there is one new ATM machine installed Jakarta.