Everyone thinks their parents are the worst
Immigrant parents often harsher because life is harder to establish in a different country to where you grew up and have to start from scratch.
Not everyone here is to the manor born, or grew up in a Christian household, but even then in some Christian households the children still get beaten. It was said if you spare the rod, you spoil the child -- though I think it was meaning the rod as in ruler or guide (like a shepherd's crook, or the rod Moses had)
But then there's also the verse about beating a child and they won't die. That's OT though. Jesus said in NT to let the children come to him and forbid them not (so they can be blessed) and that they are the ones to inherit the kingdom of God. So I think people forget that part and how Jesus took the punishment for all the sins of mankind when he got flogged and crucified. So we can be forgiven.
Anyway, as Christians what we most want is for others to experience God's love, not His wrath.