The future looks bright for cryptocurrencies, but I don't want to buy some at 1700 and feel like a fool when it crashes back down to 1100
Its value only comes from the trust people put in it, and from nothing else. If that trust evaporates, so does the value.
At this point, I speculate that any correction would start with a trigger on the major coins, like frustration over the Bitcoin fees and transaction delays, a bug in the segwit implementation for Litecoin or a false flagged segwit activation from a malicious miner, or some major exchange (like Coinbase) loses user coins. Even just Bitcoin not receiving the ETF would cause investors to second-guess themselves.
if you really believe it will go up, why not buy when you think the chart looks good and move your stops up as it increases? your position sizing algorithm and exit strategy should allow you to capture some of that profit and protect yourself from a large correction