I have two DD both planed. DB and DD both mid 30s and both married. Neither want children. To be honest all four baby understand why I would want them. They are quiet strict with mine and don't have a lot of patience but they all love them and have them stop over at theirs.
Growing up I didn't see my cousins so I know they aren't missing out however I am slightly envious when I see families meeting up or holidaying together. I only really socialise with family and I just feel a bit sad. There are multiple sets of sisters at my kids school who all share the school run and I'd assume it would bring them closer.