To be fair, physical assault of children by parents goes on even outside the cult but it's usually not something those parents are encouraged to do, nor do they feel so righteous & open about it. JW parents have no qualms about publicly humiliating their children at the KH, believing it makes them look good in front of their peers. It's particularly sick and evil.
Myself, yes, lots of times yet I was a submissive mouse of a child who walked on eggshells trying not to pi** my uber-dub mother off. I never did anything bad really, just minor mistakes that a child would be expected to make, i.e., drop and break something, accidentally knock my little brother over while playing, etc. Hands, fists, kicks, belts, shoes, wooden spoons, tree switches, fly swatters, yardsticks, books, rolled up newspapers, whatever she could get her hands on. She'd fly into a rage at anything. I'd try to get away, of course, cramming myself into closets, under furniture and wherever I could escape which enraged her even more. I rarely didn't have bruises, scratches and cuts. Sometimes I peed myself out of terror.
She also perfected the emotionally abusive "silent treatment" that could go on for 4 or 5 days. She'd either ignore me as if I were invisible or look at me with complete contempt like I was filth. She'd refuse to do any of the things she normally did for us kids - plate my food, include my clothes in with the family laundry, etc. These silent treatments were either separate or added onto the physical assaults.
But my worst memory was of my mother assaulting my little brother who was probably about 4 at the time. I was 13. His sin: not wanting to eat his lunch. I remember feeling so helpless and anguished that I couldn't dare stop her even though I desperately wanted to, and to beat the crap out of her. I just had to bear listening to his screams and the blows she rained down upon him and watch as he cowered and crawled out of the way. He peed and shat himself during that particular assault. So much for the "best life ever!".
I've never forgiven her because it was physical, mental and emotional abuse and when I brought it up once, she smugly and obnoxiously said it's how kids needed to be raised and we deserved every "spanking" as she called it. I left that psycho woman's house and her psycho cult when I was 20.
As for my own kids, there were only 2 or 3 occasions when I smacked them once, with my hand on their bottoms when preferred methods of discipline wasn't get through to them, and what they were doing was very hurtful to others, or dangerous. I hated doing it.