is it enough to have 3 children?

Yes I believe 3 children is enough.

I think so that everyone should have only 2 children. One dont know the importance of having fewer children till the live in a overpopulated country like India or China. Think about the future you would be giving to your children. There would be lesser jobs and more people or lesser seats in educational insttutes. Think about all these very carefully before taking any step

You can have as many children as you like as far as you give them a good education and make them good citizens and make their future secure.