Haha I'm so glad I don't bank with Barclays! They really have shot themselves in the foot over this. Really hope that they lose loads of customers because of it. They lost me years ago due to their abysmal customer service.
Moaning aside, I have been using Apple Pay for a month or so, and I really like it. It always shocks cashiers who aren't expecting me to pay with my watch!
Someone asked about Shell petrol stations above, and I don't know about them, but in the UK, if the shop accepts contactless payments at all, they will accept Apple Pay with no bother. This means that they may not advertise it, but there are simply thousands of places you can use it. Although annoyingly not at Sainsbury's or Tesco.
Who did you switch to? I'm one of those Barclays customers you mentioned before and extremely unimpressed. But really struggling to make the decision about who I could/should switch to.