So you sent money from Eastern Europe to Japan where it was used to buy Bitcoin. Talk to your neighbours and ask them if that is the normal way to get a currency? It isn't. While people have to jump through so many hoops to get Bitcoin, they will be mainly collectibles. And when a retail solution is found, the currency will get to its true market value and work as a currency. For example, Poles in England will be able to send their earnings to their families in Poland far cheaper than they do now.
I would guess most people have never done an international wire transfer and would be completely scared of anything like that. It does not mean it is complicated, but it is simply outside their warm fuzzy blanket of feelings.
A good question here would be the history of Paypal. Buying and selling on ebay, people received credits and debits for Paypal. Some did more sales than purchases, others the reverse. Money flowed into the Paypal system and circulated. After the ins and outs of the transfers, a net balance gradually built up in the system.
Very similar process occurring with bitcoin. Some may not know or remember this, but moving money into and out of Paypal at the first was not easy for many people. For example, my teenage son, with no bank account, did this by getting money orders and mailing them to paypal. Then he started building up his balance by selling CDs on ebay and taking paypal.
The difference between Paypal and Bitcoin, which is easy to point out, is that for an appreciating asset such as Bitcoin, the balance build up in the virtual economy will be accelerated. With a depreciating asset such as the USD or most others, by design one is encouraged to spend it .... eg, trade it for goods or services.