I have two because I provided a letter from my organisation backing me having two as I travelled frequently and often had a passport away at an embassy waiting for a visa and need to be able to travel at short notice.

Since then I’ve reduced the number of visa based countries I’ve needed to go to (more have gone electronic), and countries have reduced stamps, throw in covid, and it’s to the point that I doubt I’ll fill my passports up before the 10 years has expired. It’s a shame really, the stamps in past passports are a great momento, but places like Hong Kong, Israel, Canada, Australia have all stopped stamping in the last few years.

Guess the lack of stamps means record holding has moved from the passport into the cloud. While the distributed record keeping was certainly more privacy friendly, the new method makes it certainly easier for nation states.

I don’t think you need a special reason to have both an ID card and a passport. The ID card is only valid inside Europe though.

ID and Passwort aren't optional in Portugal, and even in Europe there are countries that don't take ID cards.

Not in the European Union as that is not allowed:

https://eur-lex.europa.eu/eli/dir/2004/38/oj

> Without prejudice to the provisions on travel documents applicable to national border controls, Member States shall grant Union citizens leave to enter their territory with a valid identity card or passport

Europe and European Union are not the same thing.

So, what are the exceptions you are pointing at?

Europe is composed by 44 countries, a subset of those countries are part of European Union, more precisely 27, which also makes the Schengen Area with agreementes with external EU countries like Switzerland.

It is an exercise in geography to track down down which 16 countries don't care you have an ID card.

How about you just state your point.