I wasn't around in the 50's (born 1960), but my childhood was far from idyllic, and I was relatively fortunate. My mum was a teenager and young woman in the 50's, and she didn't have much of a time of it either.
Children were routinely hit by parents and teachers and it wasn't considered abusive. Numerous cases of sexual abuse happened in schools, orphanages and other institutions and is only now coming to light. 'Small' cruelties, such as children getting free school meals being singled out to stand in a different queue for tickets, or leaving the 'nit nurse' inspection with a coloured card so that everyone could see were routine.
Women needed a man's signature to get credit. There was little or no childcare available to allow women to earn money of their own. Many families felt that educating women was a waste of money (or had to allocate limited resources) so they left school whilst boys went to university - if they were lucky. In many cases boys also had to leave school as soon as they could to earn money for the family coffers. Domestic violence was rarely prosecuted. Men could legally rape their wives. Divorce was difficult and not socially acceptable. Single mothers were demonised. The expectation was that you would marry young, give up work and have children as soon as they came along, without much of a life between leaving school and tying yourself down. As has been said, people of colour and gay people were discriminated against and abused.
I could go on, but there is more than enough there to show that the 50's and 60's were not a golden age for many, many people. Maybe the lucky few who had money behind them, liberal families and a rebellious attitude were able to enjoy the 'swinging 60's', but by the time my mother was 25 she had two children (a third was born later), a mortgage and a life of shopping, cleaning and cooking, whilst 'keeping up appearances', as what the neighbours thought was more important than what happened behind closed doors.
She disapproves of a lot of the more liberal developments that have come onstream since her day, but I am 100% convinced that she would have been happier (and that we would have had happier childhoods) if she had been brought up with a less rigid out look and had had more choices in life.