Taxes can also help the state treasury,
The application of taxes to bitcoin can monitor the circulation of coins and avoid abuse so organized
I think many countries have already set their sights in cryptocurrency and has actually seen how it can help their local markets and their economies. That is why it is just a matter of time until some countries, if not all, would try to regulate its use or put taxes on it, so they can use it for their advantage. Since the bitcoin market has been increasing and increasing, it's a good way for countries to reap its benefits.
This is correct, many countries have been trying to tax bitcoin under legal status. I don't think they will miss a great tax income from their citizens. That's why they need to legalize bitcoin and take tax from it.