I'm going to take a few quotes from the defensive posts here, and try to reply to them even though others already have. I'm not sure why; I suppose I'm always thinking of other readers (lurkers), some of whom might be at a point where they're questioning these factors in their own lives.
In order of appearance:
They know it all, yet they seem so lost ... so brittle and broken ... so needy and incomplete.
(@Calliopespa)
I wonder how these young adults grew up lost, broken, incomplete? One would hope to send one's grown children out into the world confident, secure, independently capable, optimistic, wouldn't one? What could possibly have gone wrong during their formative years, leaving them broken and needy?
I suppose some capable, secure, optimistic young people may have experienced awful catastrophes shortly after leaving home, so traumatic that they lost all confidence. But that hardly seems like a common enough event to justify Calliopespa's generalisation: no, something or someone must have failed to nurture the desired qualities while they were children.
smacking, sometimes with objects would be considered abuse now. Some people feel harmed and others insist it never did them any harm
(@WhatNoRaisins)
If you, the adult you are now, were repeatedly assaulted by the same person for years, would you say it was okay? Now imagine the person hitting you is three times your size. They're abusing you, aren't they?
But you're dependent on this giant for your living. This, you'll agree, makes the abuse worse because they have total power over you. Like the slaves of old, you can't get away so you must find a way to live with it. It's documented that many slaves resigned themselves to abuse, telling themselves it did no real harm and was simply the price of food and shelter.
Many children do the same. If the child or slave has conditioned themselves to take abuse, does that make it all right?
there are an awful lot of people who are seeking to blame their childhood for everything
(@Ilovetowander)
You know, the vast majority of people go to therapy saying some version of "I'm fucked up!" They don't know why they're fucked up or even, usually, what it is about them that's fucked. They just know things keep going wrong and their responses feel off-kilter.
Invariably, the problems come down to that person's attitudes and beliefs: their personal world-view. Any reasonably alert third party could see this: indeed, someone else's comment is often what prompted them to make the call. When, do you think, is our personal world-view formed? From whom do we get our deep-seated beliefs about the world and our place in it?
If you want to un-fuck yourself, you have to understand the exact problem. Then you will, naturally enough, ask "If everybody else doesn't see things this way, why do I?" The answer's going to lie with the influential caregivers whose words and actions informed our development.
there are also things that are less than desirable but were the outcome of parents just not being perfect
(@Calliopespa)
Less than desirable is being a bad cook or not having much money. People don't sign up to rummage around in scary caverns of their subconscious because of boring dinners or cheap holidays.
your children will end up holding you responsible for something or other
(@Shortshriftandlethal)
Are you saying parents are not responsible for their children?!?
... and finally (for now!)
I don't wish to directly quote the poster who wrote of the man who's been in therapy for a decade, has a BPB diagnosis, and won't let his DC see his parents.
Over 70% of BPD (Emotional Dysregulation Disorder) patients have abuse in their childhood. They're three times more likely than sufferers of other mental disorders to have experienced trauma as children, thirteen times more likely than the general population. A third were sexually abused as children.
I imagine this father has a very good reason to keep his parents out of his children's lives. Given her angrily unsympathetic opinions, I'd suspect it's a very good thing that she has also cut contact.