Money is power and for you to get that power, you need to invest,save money. You don't wake up one day and get that power, it takes a lot of financial discipline to achieve that.so I suggest you save up and buy some bitcoins for the rainy days.
Bitcoin is one thing that will not lose value rather it appreciate in value. Just invest because at old age you will not have the strength to start doing all that you were doing when young.
Savings are not only useful when you are no longer able to work in old age. There may be many adverse situations in our lives where saving or investing helps to overcome those adverse situations. If we continue to invest or save some amount of money from what we earn, then we can use it to save from any danger as well as future possibilities. So savings creates financial freedom as well as facing dangers and future possibilities.