Years ago Jimmi parents were not really taught about child developement and most parents your parent's age were of the generation where children were seen and not heard.
Yes, parents tended to dicipline too much, even teachers were meanies too.

Unfortunately, there are still parents that don't really "know" how to parent and the needs of developing children, often today's parents are self absorbed with their own issues from their bad parents.

Sorry that you struggled and are now very angry about it looking back. I was the youngest like your little sister, it was no picnic for me either. However, I do understand that my parents did not have the right help, even when they reached out for it.

OE