More aged are able to live longer due to advanced medical technology.
There are no more young people.
The number of aged is more than the number of young people.
The cost of raising children is very expensive.
More couples prefer to concentrate more on their careers before starting a family.
People are too poor to have children.
Many people hate children.
They hate to work.
They are unable to work.
They quit as they are not happy with their boss/ employer.
They want to retire.
The aged who are not working need to rely on the decreasing working population to support them.
The ageing population will decrease.
The ageing population will increase..
The working people have to pay more taxes to meet the country's expenditure to support the aged.