Once upon a time, there was a system of exchange in the world, meaning if you had any wealth you could exchange it and take the wealth of others. Then came gold, silver coins, people used gold coins to buy anything they needed. After the gold coin did not survive, the paper printed money came, I think the paper money is the worst asset, it has no value, and very soon this paper money will be extinct and people will start using digital currency. Bitcoin is the digital gold among the digital currencies, a revolution will take place and this currency will control the world of future generations.