The long-term outlook for cryptocurrencies is clear: BULLISH, especially for the most important ones.
There is also talk lately, even by some governments and companies, of adopting Bitcoin as a store of value, since there are currencies with better characteristics for other transactions.
Historically, the crypto market has collapsed when the stock market went down. So, correlation is important until proven otherwise.
So, the ultimate test for Bitcoin will be to see if, in the event of a stampede on the stock market, money goes as usual to gold, the dollar, the yen or the Swiss franc, or will it act as a safe haven.
If this ever happens, put all your money in Bitcoin because it has a limited number of coins and demand will exceed supply, so the rise in its price can be astronomical.
Also remember that the crypto market is of "recent creation" hence those sudden rises and falls. As time goes by and more and more supports and resistances are drawn on the 📈, the movements will be much more moderate, which would help stabilize the cryptocurrency market and encourage more conservative profiles to enter it.