In your post you have explained so well on how the advantages and the disadvantages of having small and large family.

The advantages of having a large family that your children will be having someone to play with and also share emotional problems together, while the disadvantage is that they children will sometimes have conflict just because of jealousy.

But at the end you concluded that which ever family one chooses for themselves that you agreed with them.
Thanks for sharing your view in this and good luck.