Uh, no.so what if i'm on the phone with a person/business and the wife comes over and says "hey, i need to pick up xyz at the store, i need the iphone since it has our payment info on it".
so stupid.
keep the credit cards.
And NFC-enable smartphone would not replace your wallet, as you will still deal with merchants and organizations that don't offer NFC payments.
What this does is reduce the number of cards you have in your wallet (particularly things like loyalty cards), reduces the number of times you need to pull out your wallet to dig around for those cards, and speeds up transactions.
Example: let's both buy a Caltrain ticket at the Mountain View train station to Millbrae, then switch to BART.
You: stand in line (likely behind 2-4 other people). You select the destination, type of tickets (adult, one-way), number of tickets, then payment type. Cash? Start insert bills, but be prepared to have the ticket vending machine spit back a couple, especially if the bills you are used aren't crisp. Wait about ten seconds for ticket, receipt and change. Credit? Swipe card. Maybe several times, the card reader is finicky. Wait for authorization, ticket, and receipt. Likely you have spent two minutes on your transaction and you waited behind several people who had similar transactions unless they're newbies, at which point you are likely to see some 5-7 minute transactions as people fumbled through the menu options and instructions. When we get to Millbrae, walk to the BART platform and repeat. Take your paper ticket and insert into BART fare gate.
Me: wave wallet over Clipper Card reader. Confirmation in two seconds. At Millbrae Caltrain, wave wall over Clipper Card reader to indicate that's where my Caltrain travel terminated. Walk to BART fare gate, wave wallet over Clipper Card reader. Fare gate opens in about a second.
Your transaction times: maybe 3-5 minutes.
My transaction times: maybe 5 seconds.
That's actually what drove widespread adoption of the "osaifu keitai" (literally "wallet phone") in Japan in 2005. You could use it as a transit pass.
I'd love to have NFC-enabled payments on a smartphone, and I could remove the Clipper Card from my wallet.
Again, we need to remind dim-witted people that NFC-enabled payment systems do not replace wallets. They streamline transactions, provides a reviewable record of transactions online, and reduces the number of cards one needs to carry.
NFC payments don't help at the little mom-and-pop ramen shop or taqueria. Heck, the best dive bars in SF are cash only. Even a credit card will not be accepted as payment.
No one is forcing you to use an NFC-enabled smartphone as your sole payment instrument.
Perhaps some day, you will get a chance to visit a place that actually has a wide range of merchants and services that provide payment options in a multitude of ways. Luckily, both Caltrain and BART still let Luddites pay with cash.