what is best for your son? Does best means providing material things that money can buy? Or does it also means giving him love and affection that money cannot buy?

Does providing him with a brother/sister something that is positive or negative to your son growing up? Would he be happier when he have someone to share and play with? And also to fight with.

Sometimes, I think parents only think of the best as material things. Buy him best milk, best diapers, best toy. What about giving him best sibling?

You worry too much. It's no point worrying over things that you cannot foresee.

What you can do is buy insurance for your kids with study fund. When the child is 21, there is a sum that can be taken out.

I did by this for my first child. But second child did not have it. Just thought maybe next time they can share the money and others.

I also wanted to have 3 kids. But due to lack of babysitter, had to forget about getting the third. I would say getting good babysitter is much more important than providing "the best".