First off, you're preaching to the choir. I show ID for many fewer things than the average person, and perhaps even yourself.

There are however many, many things that you are simply entirely barred from doing in the USA without showing ID. It's even worse in Europe.

Many music venues (the vast majority), all federally licensed firearms retailers, almost all hotels and modes of travel.

Perhaps you can live without music, air travel, hotels, and firearms, but I cannot.

In Europe, the ID you show in that situation contains no private information. Date of birth and address are not authenticators!

As a US citizen in Europe, the ID they require from me is a passport.