Not so much parents although, I suppose they enabled it. Also, not as bad as some of the horrific stories here. I'm so sorry for people who have or are experiencing such level of abuse.
Mine was a (suspected) narcissist I grew up with. Bullying- mostly verbal, some physical, gas lighting. Playing the victim became their speciality though. Accusing me of a bunch of stuff I hadn't done. I lived in fear for 8 years over what stunt they might pull next. Developed ideation age 10. So- not as bad as some examples but, still enough to have a profound effect.
How does it affect me now? I suppose again, it could have been worse. It focussed me on becoming obsessed with art as a coping mechanism, which grew into an obsession to pursue a career in it but- really, at the expense of everything else. So, a mal-adjusted form of living. I probably can't blame them entirely for my social anxiety and, lack of confidence. I was always shy. It certainly didn't help though.
I think it put into perspective that I needed to be independent though. That, my strongest supporter in life- my Dad had demonstrated where his loyalties truly lie- aligned with his own interests. That's not to say I expected or suggested he should divorce or anything but, it did create a certain realisation I needed to assume I was on my own. (Don't get me wrong though. I still love my Dad. We are still close. He's likely better than a lot of Dad's. But still, it was an unpleasant realisation at the time.)
Maybe all that was good in some sense. It maybe boosted my independence and focussed me on what I wanted. Realistically though, a career in art was always going to be shakey! So effectively now, my support system that has done brilliantly so far has been failing. Most of my strongest ideation periods have been when my career has been failing. I maybe started to pull away from it as a coping mechanism all together a few years back and my ideation has risen in accordance.
I agree whole heartedly though. I think trauma in childhood can create huge problems in adulthood. We just continually carry all that baggage with us. Damage done very young affects how we develop and see the world. In future, if people become potentially other hostiles, it's like living with a constant feeling of dread and mistrust.
I also think that once ideation has taken root in the mind and been accepted, it's just there for good. I don't think I was ever without it entirely- after it floated in. There again, I've never tried to fight it really so, I don't know in all cases.