Well, there has probably never been in your lifetime (as an investor) a time when cash was a good investment. So your instincts are totally appropriate. Leaving aside the obvious benefits of being clairvoyant and being able to go to cash immediately prior to a crash ( whether it be in equity or cryptocurrency) cash has never been “king” in your era. I hope it never will be again. Cash becomes king when interest rates are high of course. Sometimes they are high because governments set them so, in order to tame inflation. So be glad that you have never lived through such a period. Your aversion to holding cash is rational. Of course you are allowed to be careful. The choice is not between keeping cash in your mattress and buying Crypto. You can buy debt ( bonds) or equity. Some equity is almost as safe as cash and pays dividends.