I think we'll get there with it, but socially it's currently about as popular as the self-check out line back in 2001 or the self-ordering kiosk at KFC now (which I always use to jump the line while everyone else is standing around.. seriously, why?)
Well, you are at KFC. Half the people are putting off the torture for as long as possible, and the other half... well, they're about to willingly eat KFC :-)
Having them in pubs can be quite dangerous -- the payment part of the transaction is so insignificant I'm sure the whole process fires off my 'free beer?!' neurons every time I walk away from the bar.
Chip and PIN is even worse. My employer gives me a company American Express that has a chip and I got a PIN. Because Amex marks their cards as "signature priority," most places ask for a signature and a lot of unattended kiosks break, even in Europe. I can't even get a chip/PIN debit card.
Why does banking here have to suck so bad compared to every other developed banking system?