Issendai: The Missing Missing Reasons
During a difficult period of parenting last year I somehow got linked to this website, which is about "Estranged Parents" who can't understand why their children don't want to spend time with them once they are adults.
I can't remember the context that took me there, but I took it as an opportunity to discover some exotic examples of ways NOT to parent.
Maybe you'll find it interesting too. There are hours of reading there.