I was once quizzed by a police officer stood at his podium at the exit of the security hall at Aberdeen Airport.
I had it once in Stansted, when I'd gone all night without sleep and with absolutely no baggage. I had absolutely nothing with me except my wallet, passport and phone, and I looked as if I'd been dragged through a hedge backwards. He asked me where I was off to, I told him "I'm going to sleep", and he got quite suspicious and started asking questions about my travel, my plans, etc. After the second question, I came to my senses and realised that it was highly suspicious, so I explained that I'd been out drinking till the last bus with some friends. I was obviously not very sober, so I showed him my boarding pass for later that day and explained that my plan was to go to the APV gates to get a few hours sleep before the flight. He laughed and waved me on, and needless to say I was out cold for a few hours after that.
ID cards to an extent would solve some of the more ridiculous requirements in proving, er, your identity. Anyone who has been a school governor or worked in a school/education background and needing a DBS check will find employers and schools will often impose their own ridiculous rules to prove your ID.
It really does make life so much easier. In Poland, we've got digital ID cards on our phones, so I don't even need to carry my ID card anywhere. If I need to prove my identity, I can use the digital ID card in person, or I can log into websites with it. The digital ID card was confirmed with my physical ID card and my fingerprints, so it's just as secure as any passport. No need for anything else, no gas bills, no credit card statements, just that.
It's easier getting hold of ID cards because they are (in these countries anyway) issued by the local council.
It's the same in Poland, but to get an ID card, you have to either get your parents to verify you (for the first one as a child), or as an adult, you need to bring a passport. If you don't have a passport nor an ID card, then you either need to take a parent or you need to bring something with your photo on that can be verified by the issuer, like a university ID. It's a surprisingly secure system, as they can check a large amount of data about you on the state databases, and if you can't verify your identity with them, the card won't be issued.
Is there a go-live date for EES yet?
The latest information I've received is that there's no date for the EES due to numerous concerns about how it will operate in practice. There are rumours that several Member States won't approve it until it's been tested on a wider scale, and the latest projected date is autumn 2025. It may come into service earlier, but I would expect ETIAS to launch first and then the EES to accompany it later.