Hmmm. Interesting! I think at the heart of a good childhood is parents that love one another, work as a team, navigate life's bumps through discussion and resolution with humour. Capable, strong and resiliant.
And then obviously invested in their children (and i do think a good number of kids is preferable - 4 at least for good teamwork!) but always with the end goal of guiding and supporting them into independant, well adjusted adults who are able to make their own way in the world, but also who do want to return for family gatherings.
Parents that are non judgemental, good listeners, that allow room for growth and full development of potential in an atmosphere of love.
Realistically, though, how many of us get that?! Or are able to deliver it?
I grew up in with domestic abuse, mum ill and in bed from when i was 14. She was dead by the time i reached 20. Dad shut up the family home, chucked us out. My brother, then 18, lived a life on the streets. Dad married twice more. Once to an alcoholic, then to a Russian woman who didn't bother telling us he'd passed away!
Does build resilience though, a bad start! To be fair, my mum was a great mum til she was ill and, with my dad being in the navy, he was away a lot so early childhood was ok and we did lots of stuff. Probably how i turned out fairly normal. I was pretty mature anyway as a teen, and managed to get away and do ok for myself by 19. Pity my brother was just that bit younger and didn't fare so well.