The number of old people is increasing rapidly in many countries. This has both advantages and disagvantages for each country.
Due to their extensive experience in life, they can guide the youth generation. As a illustration, when teenagers have to face a complicated problem, they often seek advice from someone older than them. Moreover, teachers, researchers or politicians usually require experience and elderly people can easily contribute to that country's career.
On the contrary, in some countries where the economic develops slowly, old people are often a burden. People in those countries have to suffer from vast poverty and elderly people often don't work. Moreover, young genaration cannot earn enough money to pay taxes and even survive.
