Future Imperfect:Deficit Economics


I was at the IMAX for watching XXX-2, Seeing the spending, the mental graph started plotting and I recalled the gerantocratic explosion,soon to be realized, on THIS planet we live. By 2k24,The gray would dominate the Planet. As the youger generations of the present are lesser frugal, I wonder what would happen to the Economies of Various Nations. As the Savings Capital Index goes down with the ageing population, The baby boomers when they hit their 60's , their savings rate would go down and so would the Capitals of various nations..... This is rolling up to take a Snow Ball effect...The solutions I can think of are,

1. National Gov's should encourage by giving more % as interest
2. Tax exemptions for people who save money
3. Gov should introduce a Social Security program that would enforce a fraction of salary to be regular mandatory savings towards the pension schemes.