If your phone has a fingerprint reader, I find that it's even easier to pull out the phone and tap, than to try and get a card out of your wallet.

Plus, feels more secure since you need to authenticate, vs anyone with your card can just tap it. (sure, usually you are not liable if you report lost credit card quickly)

What I'd really like to see next is for proper electronic receipts to be transferred to the phone, vs just the transaction total.