As everyone knows, more and more families have only one child. There are both advantages and disadvantages.
For one thing, the family which has 2 children can have more fun than that which has only a child.what's more, if the family only have a child,the child may feel lonely and be selfish. Perhaps, he or she will never think about others. The child maybe spoiled in the family.
For another thing, it also has disadvantages. Having only a child is more convenient and cheaper than having more children. The child in the family maybe more independent. In addition, the family which has a child will be more light-hearted.
In conclusion, how to choose is your own choice.