There may be some other reasons, mainly to enjoy these benefits, a person deposits all his life savings in the bank.
from my point of view, just saving is not enough, it is the right time to think about where and how you are doing it. these reasons can bring big risks in our life at one time so we should be very careful. we can save some money in the bank for our family expenses and emergency fund but not all our life savings.
I can give you a thousand and five reasons why putting your life savings in a bank is a totally bad idea, but I will only talk about inflation. Yes, inflation can be a big problem when you choose to store your value via fiat (naira). Inflation isn't only eating deep into Nigerian's economy but also the global economy too, but like we already know, naira is depreciating and losing value by the day and so will your money/savings when you choose to keep it in the bank.
25% in gold
35% in Bitcoin
15% can be invested in the bank for financial expenses and emergency fund expenses if necessary.
Duration of how long you intend to hold that money matters a lot when choosing your storage method. Whether it's Gold, Bitcoin, Stable Coin or Fiat. You really do not have to split your funds into percentages to store them IMO. what I'd advice in this case is looking for an asset that has proven to have long term potential like Bitcoin or Gold (I'd strongly advice Bitcoin) and store part of your income there as your savings and you gotta make sure that you don't intend to use it anytime soon, meaning you gotta have long term plans for that savings, and then the other part of your income, which you plan to use anytime soon can go to either a stable coin or your bank account so before it thinks of depreciating in value, you must've already used it. This is my own opinion.
Mind you, the latter includes your back up funds and all this should be after you've taken care of your essential expenses to avoid dipping into your savings for financial support.
Saving your money in the bank is only good of you are saving it to start an investment, aside from that I don't think it's a good idea, because it's better you put your money into an investment that will generate profit for you rather than keeping it in the bank and getting very little a profit.
Investment your money makes your money work for you, rather than keeping it in the bank and it does not generate a good profit for you. Like I said earlier your money is only good in the bank when you are saving it for an investment.