Well, I do think I can make assumptions about other people's life, but yes it is their choice and life. (But I did experience the child free independent state for a long time, I wasn't unhappy, it was a different life, but I was always clear that I wanted to have children one day)

And I did not, nor would I ever say people need to have children to be fullfilled. Those who question whether having children is the right choice, I would never urge to do it. Rather the contrary as you cannot reverse this decision and if you find out after the act, no, children are too much for me - then it is too late.