well you can do both saving and investing with bitcoin you just need to convert your money into bitcoin and just hold . because bitcoin itself is also investment nowadays where you can save you money while getting profit because of the mostly price increase .
That's right, the price of bitcoin at this moment is already high. I don't need to invest my coins in other websites because holding it is already investing for me. Whenever I need money, I just convert it to my fiat and request a cash-out.