Many of the boys and men who are regarded as immature by some females are so deemed merely because they do not want to get married someday … or soon.
Being divorced does not necessarily make one’s advice on marriage useless … or useful.
Being a bad parent is a sign of not having learned from experience.
The only reason that some people aren’t ashamed of their parents and/or siblings is because they know that we know that they did not choose them.
In view of the frequent occurrence of modern domestic groups that do not consist of, or contain, an exclusive pair-bonded father and mother, I cannot see why anyone should insist that our ancestors were reared in monogamous nuclear families and that pair-bonding is more natural than other arrangements.