Look at the demand for crypto here:
https://coinmarketcap.com/charts/
It has more utility as gold and will soon become the safe haven as the FIAT mess starts to wobble (see Venezuela, Illinios, US debt etc).
If you think Crypto is a ponzi scheme you haven't done your research.
Decentralised...
I put a good stash of bucks into Ethereum a few years ago.....you can imagine the % increase I've experienced.
Advice:
Study blockchain tech - each coin is either a platform, currency, or dapp.
Get in on ETH, OMG, STRAT, GNT, NEO. FUN.
Study ICOs - the % one can make is off the...