The novelty of Apple Pay on watch wore off? I use this all the time but it’s not noteworthy or interesting, just a great feature that’s seamless and doesn’t require pulling out my phone.
See someone with an Apple Watch on frantically looking for something, just say "Hey you know your watch knows where it is". Just press the button, DING.
I wish it were. The double click to pay is pretty annoying compared to “express mode” Apple Watch apps like Suica and UniFi Touch Pass.
But I think the real reason is that people would walk around with card readers and scan peoples watches to collect cash. I can only guess it doesn't happen in Japan for cultural reasons. You could try and do that with purses/wallets too, but since most people are carrying multiple cards, they interfere and largely prevent RFID skimming.