What you said about the broken relationships between "people with children" and "people without children". These relationships get so loaded with stereotyps and lack of communication that it really gets sad. Whereas some parents look at people with no children as people who have "stayed behind", as if whoever is not a parent ("yet"!) is underdeveloped in some way, and negate any other alleys for personal growth and service to others and the community, some people without children treat their parent friends as if they'd undergone a lobotomy and cannot be engaged in anything except diapers.

It's sad, really.