I preferred a small family because small family size is easily to support. Fewer members of the family means, few heads to support. As a parent you have to give your children their education, mental and physical needs. You also need to support them emotionally. Having a huge family amount to send them a good school, to ensure that they are provided with complete food and nutrition.
A small family has small needs compared to a huge family. With few bodies in the family, your provision of clothes, water, food are also small.
A small family can have a bigger chance to be closed to one another compared to a big family. Bigger families can be hard to put together. Each person has different choices and preferences. They have other beliefs and opinions.