Times move on..kids nowadays love having their own back account and contactless card. They can have one from age 13. I got them for two of my kids when they were 15. My son uses Apple Pay on his phone. They definitely understand the value of money as they’re always checking their balance and my son hates it if he dips below a certain amount!
I rarely use cash as I find coins/notes ‘dirty’. Imagine how many hands they’ve passed between?
I also prefer contactless as I don’t like touching chip and pin machines as most of them look filthy and I always think of how many people have touched them and the germs!