It's their business. Left to myself, I probably wouldn't have either married or had children.

Over population is a world wide problem . Why should anyone be belittled , for not having more children . If you don't want them , don't have them .

I allow people to be as they wish.

Bringing children into the world is a choice. Not bringing children into the world is a choice. That choice is up to the people involved and it is no one else's business. Too many children are born as a result of not thinking about the consequences of an act. Some of them are fortunate to have parents who, though surprised by the results of their passion, were delighted to have them. Sadly that doesn't happen very often. Sometimes it is an inconvenience for one or the other or perhaps both parents.

There are many possibilities, but I won't outline them all. Speaking to your specific question, yes, it is an issue for the majority of people in the world. It is how the species is preserved, and increasingly it is how numbers of members in various religions are bolstered. At one time it was important because lifespans were short, life was hard, and it was a matter of survival. Those conditions are long gone for most regions of the world. However, this idea that people should have children has carried over and is in force today as it was in centuries past.

The majority of the people in the world make the assumption that everyone should and will have children. This is largely because of the religions of the world, some worse than others, expecting their members to produce children like an assembly line that pumps out more and more obedient carriers of the flame. So, yes, most people think people who don't want children are somehow not normal, whatever that is, and that they need to be convinced to have them. I think this is a wrong mindset. That I think it is wrong does not change it. As in so many other things, it is something we need to outgrow, and I think I see some glimmering of hope that we are in the process of doing that now.

I feel that they did what was best for them.
Unless you are absolutely certain you want them, you shouldn't have them.

Not having biological children is doing the rest of us a favour as far as limited resources and pollution go. I consider it selfless these days. They should be rewarded.

Some people don't want children, and that is their choice -- and mp one else's. It is not for others to judge.

I haven't got any

I quite like being childless. There are lots of people who have children, and don't want them, or had a child to "fix" their marriage. I feel terribly for them.

I'm childless and I love it

They're lucky.

I have two step children, no biological offspring. I'm good with it.

It is not bad not to want children. It is sad if someone who wants children can't have any. Adoption sometimes works.

They are less selfish.