Check out this pic. Bitcoin isn't even close to mainstream adoption yet, and it's expected to continue growing. Some say it might hit $4k by the end of 2017 and $10k by the end of 2018.
True, there might be a dip to $1.7k - $1.8k at the end of July / beginning of August, but you literally cannot lose if you play it smart. Have cash ready to buy the dips, safely store some of your Bitcoin on a paper wallet or wallet like Electrum, which allows you to control your private keys, and put the rest on an exchange which will list Bitcoin Unlimited. More on what to do here: https://bitcoinmagazine.com/articles/beginners-guide-surviving-coin-split/
