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My only concern which is the government in general, they want control and their control will be eliminated or will reduce as fiat will be replace with crypto.
Actually, it's we, people who are supposed to be in control of the government, and not the vice versa. I know it is still not the case in most countries, but, as I said, the world is changing rapidly nowadays.
It is obvious that Bitcoin can be a good currency. Maybe not for small purchases yet, we can use other currencies for that, but for transferring amounts over $1,000 abroad BTC is a very good tool. If governments don't accept Bitcoin only because it would be disadvantageous for them personally, then I guess they are wrong governments, and they will be replaced sooner than they think.