Calendargirl
I agree about being more prepared when you get to the checkout.
Also being aware of people waiting behind you, and not keeping the checkout person chatting if they’re busy.
But some folk are very self absorbed, especially as they get older.
(Hopefully, not me!)
It isn't just a older people, we got caught recently behind a woman in her 40s(?) using a phone on which there were several vouchers she wanted to use, but she couldn't get them up on the phone properly, or the phone/system was misfunctioning. I am not sure which.
We were stuck there for nearly 10 minutes because we were directly behind her and had a good load of shoppiing already downloaded onto the belt, plus, of course, people behind us. It was a busy time of day
She fossicked around, completely unaware or ignoring the ueu behind her, We did not get a look or an apology, nothing. More staff were called to help sort the problem out. I presume in the end it was. By then I had lost the will to live and DH's blood pressure was rising to dangerous heights.
All sorted out, she waltzed out leaving us to a deeply apologetic till clerk.