You do not have control of who your childrens' friends are unless you spend all hours with them. And most people are happy nobody can legally sell smokes, booze, and drugs to 12 year olds.

Surely you can see how requiring ID for a physical cigs, drugs, and alcohol purchases is different from requiring ID to use a website?

“Think of the children” is the exact tool fascists use to erode liberties. Governments worldwide salivate at the idea of having a registry of what every individual is doing online at any given moment.