Back in 2009 I started mining Bitcoin @ home on my PC, but it was essentially worthless, and there were more important things like WoW. Had I kept mining, I would most certainly be a multi-millionaire. That story is probably shared by many.
I do know people who currently mine using NiceHash and collect anywhere from a $1 - $10+ dollars a day. They do however have large investments in hardware and space for that hardware plus the cost of electricity so the return on investment isn't that great but it does provide a small income stream.
Each of those folks has a Bitpay Card and can use it at any place that accepts them.
There appears to be a lot of (currency value) corrections and speculation that's occurring.
A lot of pluses and minuses to crypto... fixed amount of coins, secure but need electricity, what happens the electricity goes out? How's it going to be backed (gold) or is it going to backed (Fiat currency)? Each nation makes their own? If so, how many coins are needed or made for each nations crypto? What happens to money markets? What about inflation (i.e. can't just print more)?
The deal with money is that it's just an object with artificial (false or perceived) value placed on it.
A good read is -
The Creature from Jekyll Island
