this reminds me about the quora post about bitcoin.
In a world of where there is no regulation in currency, you dont have a FED, this money will crash. We dont have liquidity in this currency, as so, nobody can 'inject' money in the market.
Give it a little more time. There has been more widespread adoption only for 8 months or something. I think the amount of bitcoin related activity is pretty impressive.
Let's see after five years if cryptocurrencies are still used.
If you look at this, you can see that gold is more volatile and spiky.