And non-regulation causes many risks. If the "bubble" of bitcoin bursts, the stock market will collapse after it. And vice versa: if a recession starts in the market, investors will panic and will sell bitcoin. Last year, money followed the indicators. As soon as there was a jump in volatility, there was a great demand for liquidity. I believe that as soon as the crypto-currency markets become more regulated, some risks will go down.
And another important thing is that while the stock market doesn't really change more than - let's say 10% - and 10% means A LOT, a 10% change in crypto markets is not really a big deal and it happens pretty often.