Only among the 55+ you’ll find more support for staying out
Because the pound is strong and there are other countries with their own currency.
It was never an obligation
“The pound is strong.” Keep telling yourself that, mate. Reality disagrees with you, the pound knows only one direction vs USD and EUR, and that is down
https://www.keycurrency.co.uk/wp-content/uploads/2021/08/GBP-to-EURO-Chart.png
Every EU member but Denmark is obliged to adopt the Euro and the days of granting exceptions on accession are over.
On the contrary, the EU will make sure that the UK isn’t going to pull a Sweden and deliberately fail the Euro criteria just to avoid adopting it on a technicality.
What might happen is introducing national backsides for Euro notes so you can have your King’s mug on yours. We’re not monsters after all.