Big company's like Apple and Google are investing big in mobile payments. The next few years they invest big to make it more smooth and easy.
And also mobile payments you have to accept with fingerprint or password I gues. so the theft situation is the same situation if your debitcard get stolen or get lost.
http://bitcoinist.net/apple-pay-statistics-far-promising-bitcoin-global-alternative/True, but I think apple pay along with apple in general is going to hit a rough patch here pretty soon with trying to act like Google, along with thinking about putting out an iPhone product that doesn't have a universal head phone jack and makes customers use only Apple headphones... Speculative, but I digress.
I think for an easier mass adoption, people have to be introduced with something that is familiar with them and "dumbed down" in a way. It would be very easy for potential customers to by coins and send them to an address on a debit card without necessarily a worry about private keys and that sort of thing. Plus, people just like tangible things. Taking a card out of their physical wallet to swipe is the human subconscious thing to do now.
Sure maybe in like 10-20 years it will all be QR code scanned, but I think the problem right now in the immediate future lies in confirmation times, and having a debit card that is backed by a currency/asset like Bitcoin seems extremely beneficial IMO.