It is expected in the near future that there will be a higher proportion of old people compared to the younger population in some countries. Is it a positive or negative development? Give your opinion and examples

 social contract in most societies is that the older people are taken care of by younger people when they become too old to look after themselves. However, it is obvious that if young people are greatly outnumbered by older people, then this system will break down with unpleasant results. Some countries are already trying to address these issues by developing robot helpers that can assist older people with their daily tasks instead of the job being performed by the younger generation.
Overall, a balance of age groups is desirable. There are alarming examples, such as one-child policies, that show what can happen when one particular group becomes