Re: Bitcoin as a currency (an economist view/contribution)
3- till now, Bitcoins and other cryptos appears to me not as currency but as a bullion of gold, a bullion of silver, a bullion of platinum, an ingot of aluminium. It costs money to buy and keep, and it costs money to spend.
nearly 1 billion dollar yearly bitcoin payments/transactions only through BitPay disagrees with you:
https://blog.bitpay.com/bitpay-growth-2017/
it doesn't get any currency-er than this.
