The global situation is complex, overpopulation is the problem. Thinking about the economy when you are already old is a mistake, our parents should teach us how to do things, they should prepare us for the immediate future. It is when we are young that we must look for ways to produce more with less effort, and quality education is the key. If you learn and train as a competent professional, the future is a peaceful prospect.
In my particular case, no one would give me a job because of my blindness, so I decided to learn from various scientific currents and to train professionally. It was my professional training that opened the doors for me to enter Canada and to become a citizen today.
With regard to saving and spending, you always have to find a balance. It's true that we have to save, but it's also true that we have to indulge ourselves as much as we can. When the time comes to leave the ship, if we have clothes on, it will be the material that goes with our body.
I am not sure if overpopulation is the main issue, rather it is resource distribution. The system is designed to put the resources in the hands of the few and keep it building there. It breaks eventually.
This is struggling now, since a lot of the trained professionals, are finding themselves replaced. This happens naturally, but the cycle is speeding up, so training isn't enough to earn for the 45 years it needs to earn before retirement.