I respect your point of view when it comes to bitcoin. It wasn't entirely useless if a lot of people are benefiting from it. A lot of people get rich because of bitcoin and I think it is quite rude to say it was useless.
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Im  also respect the point when it comes to thr bitcoin, but many of our Country are getting rich by using Bitcoin . So for me Bitcoin is not a useless, its a Blessing from God😇