You are assuming that the kids somehow magically know what would make them happy.
> One day, your kids are going to tell you that you are wrong. Totally wrong. Wrong about morality and ethics. Wrong wrong. And you are going to have to believe them, or you will lose access to a part of their life forever.
How do you know that? I for one feel that my parents gave me way too much access to tech while I was too young to handle it. Also, I wouldn't cut my parents off for disagreeing with me about morality or ethics, I would expect the same treatment from my kids when they are grown-ups.
> Raising a kid is hard, but being a kid is harder.
I did both, and in my experience raising a kid is much harder than being one.