Better to invest it but allocate some of your money to save it in banks. divide your money so that you can have for investments and for emergency purposes. It is not reccomended to just save your money. Its value will deflate because of the inflation but on the other hand, dont put all your money just to grow it. It has risk and instead of growing it, you may lose your investment if not put into a right place. Diversify your investment so that, in worst case scenario, if one collapse others will not be affected. Not just invest in cryptocurrency, there are stocks, bonds, mutual funds, gold and real states to name a few. Just enjoy your life and save for your future.
For my own opinion, if im earning big from bitcoin, i would rather invest it than save because there is this big tendency for it to get bigger and bigger. You have to be more strategic and wise when earning big from bitcoin. When you do exchanging cryptocurrency well then its for sure you will have a lot of investment.