Actually, Indonesia's birth rate has actually been declining last year. Based on last year statistic it's 2.13 children per woman and CBR of 16.18 births per 1,000 population. But we're still the 4th most populous country in the world with more young people in our pyramid and our life expectancy has increased as well.

Also the unlike the west, over here many are working in informal sectors and they are not covered by any retirement and social security programs. When it comes to Indonesia, supporting elder parents/family are more like cultural and social obligation rather than simply a consequence of an inadequate pension system.