Are NFC and smartphones-as-credit-cards dumb ideas?

DVICE:

…financial institutions, mobile handset makers and carriers have dreamed of turning your cellphone into a mobile wallet, to use your smartphone the same way you use a credit or debit card.Finally, this year we may finally reach this near field communication (NFC) nirvana, of simply waving our smartphone over a retail payment terminal instead of a credit or debit card to pay for our copiously consumed commodities.There’s only one problem. Using your smartphone as a credit or debit card replacement may be more trouble than it’s worth.

I can’t imagine doing this on a regular basis. Too many concerns about security and data integrity for me.