Bitcoin was launched in 2007. It's 10 years and still no country has approved Bitcoin ?? 
and in 2018, 2nd richest man "Warren Buffet" said "bitcoin will end up badly"
and in 2018, 2nd richest man "Warren Buffet" said "bitcoin will end up badly"
Don't underestimate the power of bitcoin and do a research first before you conclude that no country has approved bitcoin. Because there are countries and take note that powerful countries are considering bitcoin as legal. to give you some are:
1. Some part of the United States consider bitcoin as legal.
2. Bitcoin is legal in Canada
3. Australia is also considering it as non harmful way of investment and they are not banning it.
4. It is also legal in most part of Europe like in Belguim, Cyprus, UK, Switzerland, Italy, Netherlands and France.
5. Singapore in also on the list
6. Dont forget Japan which expressively into bitcoin
7. And last is Israel.
For you to learn more of these, please check this link - https://atozforex.com/news/top-countries-where-bitcoin-is-legal/