Two things people don't understand about Bitcoin and Cryptocurrencies:

Bitcoin futures are brand new. The ONLY way to play these futures is to go short at first. After this epic rise in Bitcoin, of course it's going to correct...therefore, futures are one directional at the moment. Two things will occur shortly in relation to Bitcoin futures: 1. The shorts will cover and establish a long position. 2. Those who refuse to cover will get involved in a "short squeeze." Both of these scenarios will drive Bitcoin higher.

Second, and more importantly, Cryptocurrencies are a perfect hedge for precious metal investors. Once the general public understands this, there will be a whole new group of Crypto investors.
Bitcoin just had it's cherry popped! Futures are the beginning. In 2018, there will be ETF's and option derivatives available. This is just the beginning of mainstream cryptocurrency acceptance. There are going to wild swings in the market that are going to wash out all the weak hands before the smart money comes along and solidifies cryptocurrencies for the future. Until the prices can be stabilized, there's going to be a TON of money made and lost. Buy now, with money you absolutely can afford to lose 100%, ignore your cryptocurrency wallets, come back in a year and see what you have.