"Childless"

I just got done having a conversation with my best friends brother. His sister and I were talking about our pregnancies and the difference of first versus second, third, etc.

 It then brought up the discussion of different areas having different ideas of the ideal time to start a family. Where I used to live, many women were done having children by the age of 30. I felt a lot of pressure when I was first married to start having children right away. Where we live now, many couples aren't even starting their family until 30 or after. Many women in this area are career focused and chose to be established before wanting to start a family. (This is my friends case) She says her job is very secure and she doesn't feel at risk of losing her place in the workforce due to having a child. She believes if it would have been 5 years earlier, she wouldn't feel as confident as she does now.

Her brother began talking about why him and his wife are, unapologetically, never having children. His wife loves her job and believes she had to make a choice. In order for her to continue to thrive, her focus has to remain on her job. They also love to travel, old cars, motorcycles, and simple living. These are his reasons for believing children don't fit into their dream lifestyle. he says they are often referred to as "childless", and that bothers him. "It's indicating that I'm missing a child."

He says that his wife gets questions and remarks all of the time for not having children, yet. When she tells people she doesn't want children, she is often asked why? He says there are even people who make remarks about what she will do when she is older and has no one left after her husband dies, or vise versa. Asked if they may adopt at an older age. What about their family line? Etc.

So my question is.... Do you believe there is pressure put on couples to have children. To determine worth? Or the things listed above?

What are your thoughts on this?