What's the life expectancy in your country ?   I'm not sure , but probably about 75 years . How about in your country ?   About 70 , I think . This newspaper article talks about the problems of an aging population . It's a problem that will soon affect most of the world .   I heard that the government might need to increase the retirement age , because otherwise there will not be enough workers to support the young and the elderly .   Perhaps we need to have more babies ! Tina gave birth to a baby boy yesterday .   Did she ? That's great . However , if we have too many children , that will have a bad effect on the environment .   How's your son these days ?   Oh , he's fine . Kids seem to grow up very quickly nowadays .   He'll be a teenager before you know it ! Teenagers are often rebellious ! When do you think it is a good age to have a child ?   I had mine when I was 24 . That's a little young . I'd suggest you wait until you are in your late twenties , or even in your early thirties if you have a good career .   Yes , I think you're right . I'm thinking about having a child , but not just yet .   Is there a big generation gap between parents and their children in your country ? 