Cryptos can and will crash really bad imo, but to rise stronger than before. Period.

BTC down to 5k$, up to 15k$, then down to 1k$. This last dip will be the real BTFD point.

By december BTC will be 25-50k$. Why ? just because after crashing it will stabilize, having less volatility and cheaper tx costs or even no costs at all with any kind of new hard fork, IT WILL BE ADOPTED, primarly by Amazon, then by the rest of online shops.

And it will rise badly. What is funny is that the reason that will make Amazon adopt it (low volatility) will induce the highest volatility and rise ever seen in a any kind of market, even at the time of the tulip mania. It will of course then correct but will never go under 25k$ again. 100k$ by the end of 2019, and I'm conservative on that.

Upvoted you anyway, even if I think that you do not really understand the technology behind BTC : blockchain and its successor : hashgraph. Tech is the game changer.