as to the future, yes crypto is the wave of the future without question, money moving forward will be electronic and the dollar will die, maybe not in the next 5-10 years but its coming none the less. There is to much control to be had for it to just be left alone. Plus governments never really like the idea of asset trades off the books. its to hard to tax and they want that spending money. Now also digital might not have to mean crypto, it could be another form but the idea will be much the same, but i dont think whatever we get will be mine-able. Unless that transaction fee is backed with a purchase of other tangible assets or securities. Like tether. could you think what would happen if bitcoin had 1 gold oz for each bitcoin in supply. maybe no big deal when gold is at 1300.00 an oz, but if the market crashes gold goes through the roof and your covered on the back end, and if gold drops out, fiat coins can thrive. Thats why coin shops are a thing, the market is either so good that they are collectible for well over spot, or the market fails out and gold and metal spike.