If a large group adopts bitcoin now, at the current price or at a higher price, they would be sharing their wealth with the early adopters in proportion.
For example, if Greece adopted bitcoin, and 9 million BTC were circulating there with a value equivalent to 10'000 USD/BTC, then Satoshi's 1 million BTC would allow him to buy 10 billion USD worth of Greek property. Greece then would become 10 billion USD poorer.
That is why no sane government should allow privately issued money: the people who issue it take wealth from those who use it.
When the government issues more money, the government is taking wealth from its citizens, so it is just another tax. It may be a stupid kind of tax, but people tolerate it because the government is supposed to give that wealth back as public services.
When the banks issue more money through fractional reserve lending, they are taking that wealth for themselves. Citizens should not tolerate that, but most do not understand what is going on. I have only a foggy notion myself...
Good thing there is no such thing as a sane government