Earlier quoted context omitted.
On the other hand... The 2 to 3% drag needs to be corrected for increased liquidity, which is difficult to do. People don't use credit cards because they are convenient, people use credit cards because they do not have the extra money, which drives compounded economic growth. If bitcoin succeeds, credit mechanisms will be built on top of it, and they'll behave almost identically to credit cards, including have fraud.…
"People don't use credit cards because they are convenient, people use credit cards because they do not have the extra money, which drives compounded economic growth." That's not true everywhere. I'm not sure if it's US-only behaviour, but in other countries, the majority don't use credit cards for debt - just as a convenient payment mechanism.
Sorry to pull an HN special on you, but do you have any kind of source for that? I've never heard it, though I have heard that debit card usage is much higher in Europe.