What is the reason behind the Iranian authorities' promotion of larger families?

Advantages:

1. In countries with aging populations, having more children can help balance the age distribution and maintain a working population to support the elderly.
2. More children can contribute to economic growth through increased consumption and workforce participation.
3. Larger families can provide more emotional and social support for each other.
4. Increased population can lead to a higher demand for goods and services, which can stimulate economic growth.