Like others, I can't remember the last time I had to prove my ID when I was out and about, I've recently provided a copy of my passport to the people who manage some of my investments but that sort of thing isn't what I'm thinking about. However I do always travel with my wallet which contains my driving licence.
Last time I can remember was the bar departing JFK airport in which they had a policy of checking everyone's ID. And that was more than 10 years ago.
I'm old enough now not to need age verification; like many also when I was younger it wasn't generally possible for pubs to check your age so they just went on what you looked like, and plenty of us used them when we were 17. I was once in a group when I was asked if we were all 18, to which I replied (truthfully) something like "I am 18, I can't vouch for everyone else" and we were all served, in truth I knew the majority were still 17. I was last "seriously" asked in a US supermarket on the eve of my 30th. birthday which amused me rather than annoyed me.
I don't like the insidious trend to expect to have to prove who you are when you're out and about. I was once asked to do so when I visited a potential supplier - I was a potential customer and had an appointment. I refused to comply with the request.
As others have also said, with voting there's probably more of a problem with postal voting, which doesn't need ID verification in the same way.
There are arguments to be made for ID verification for voting, but I don't think any of them stand up. I think this stems from a "task force" in Conservative Central Office to maximise the vote at the next election - so we have voter ID, we have overseas voting and we have boundary changes. All legal and all will have a positive effect on the Conservative vote. And - to the specific topic of this thread - it ends up making it harder for students and other young people to vote than would have been the case, but does not significantly affect the votes of older people.
I hope this law gets amended when Labour gets into power, it's in its interests to do so of course. I think there will be a lot of negative press after the local elections in May.
And, of course, the reality is that it won't affect me - if I voted in person then I always carry my driving license anyway, but in fact I vote by post and I'd be far more annoyed if my right to vote by post were taken away.