Both investing and savibg are good options. Actually, having a lot of options is better. We can never be sure what the future holds for stocks and banks. I believe it's always better to be ready.
Sorry I dissagree with you. I think investing in proper proportions according to our needs is better than simply storing bitcoin in a long time. though only by storing bitcoin can give us an profit, but if we can get more money by investing as trading why not? at least save bitcoin better than saving fiat.
It is important to save money as well investing it. You cant just invest all your money into whatever field you wish. Then you end up with zero cash in pocket for daily needs and let alone emergencies that may arise once a while.
Both of them have their own importance and both of them are important if you are willing to earn money and live properly.
Again many people think that saving money is a lazy method of "earning" money - utterly wrong approach of thinking - because savings interest rate is very low and its better to think of it as dust collection. Savings is important for emergencies and for liquid cash often needed in excess for daily purposes. It is not a method to earn money.