Yes maybe saving can also be useful to be used as an emergency fund to overcome problems that occur unexpectedly but on the other hand I can't choose or can't say about which one is more important between saving and investing, because of course both are quite important and recommended to do if you feel financially capable of doing so.
Since both saving and investment are necessary, why we must choose one of them?
If it is possible, I suggest to have both saving and investment. Saving will be aimed for reserved funds, investment has a target to earn profits. In this way, we won't be worried about having fresh money to use at any time and we also have the allocation in the investments for earning more money. I'm sure everyone will have both of them as long as they have enough money.
But on the other hand, I think I would agree with what you said that saving money can make us lose the value of money because of inflation that can occur at any time and I think it is because of this that people prefer to allocate their money to investment, and yes for the problem of what type of investment they will choose basically for this problem really depends on their respective beliefs or beliefs, which usually maybe more of them see in terms of significant profits and for myself so far I am still maintaining my investment in Bitcoin while waiting for the halving phase in the next four years.
In saving, we may lose the value of money but it won't be very significant. True, it is caused by the inflation, it is something unavoidable due to the worse situation of the world's economic and financial system. However, we can't rely on investment only to secure our financial. We don't forget that investment has a potential of losing money, too. Investment isn't a way to get profits automatically. Even, in investment, the chance to lose money is higher. Specifically for the investment with high risk such as crypto investment, we don't fully rely on it. Spreading the funds on some fields is the best way, including put some of the funds as saving. Bitcoin, real estate, lands, and gold are some options to diversify our wealth. Don't only maintain your wealth in Bitcoin although you understand the cycle! We need to have other sources, make sure to have 3-4 sources of our wealth.