Yeah, OK, but then I need either ATMs that support RFID smart cards (I've personally never seen one) or to carry my ATM/debit card, which is different from my credit card, although granted I could probably make do with just carrying the debit card.
Ah yes, I didn't really finish my point, that a few years ago, going cashless would really not work at all, whereas now it is generally workable with a few exceptions. Nearly all retail and dining places take cards for any amounts. I figure this kind of thing will follow the same path.