Interesting. Where do you live? Here in London they are really commonplace - you see them on people on the tube all the time and I notice them being used fairly regularly by all ages and sexes for contactless payments, running, etc. In fact they seem so widely adopted that it’s not uncommon to see even people with them who you would not necessarily expect to be wearing them.
They are given out for free to anyone signed up to Vitality health care (and stay 'active'). A lot of companies in the city use them as the health care perk.
I wonder how much that has bolstered the amount of people using one.
They're pretty rare in my UK city; I expect being able to use them for the Tube provides a useful rationalisation for the purchase - the are a lot more richer people in the greater London area too.
