I think that saving is the better cause investments is always risky, you will never know what you can got at the end, so better to use safe ways.
But saving alone is a slow process, with saving we cannot get that much money which we can expect with investment, and if someone want success then they should have to take the risks, as without that we will live a passive life.
actually its better to invest because it can grow your money, but you need to find safe and potential investment, if you cant find one then you better save your bitcoin, because saving bitcon and wait for the right time to sell is consider investment, this method is safer but you earn slower than invest in other place