[TwoFactor]

There is a lot more risk on the consumer allowing a merchant (and vicariously the consumer's bank) full "pull" access to a bank account. You'll need a dispute resolution system, which is what debit cards are basically providing in addition to point of sale systems. Imagine a security compromise like with Target, but if there was full bank account access as well... it would be a nightmare.

Bitcoin is "push" based which eliminates the ability to fraudulently pull charges from the sender's account. Banks also charge a fee, and add transfer times to transactions that are basically non-existant with bitcoin

[davidrangel]

Agreed. Giving someone full access to your bank account is very risky. At least with credit cards you can always dispute charges and it is the merchant who is usually on the hook, not the consumer.