[yorwba]

I guess the payment wouldn't go so smooth if the bitcoins are sitting in 8-year-old files. You'd have to add to your description the steps necessary to install that wallet app and import the private keys. Whatever happens when you "point your phone at your computer" (OCR?, QR code?) might also not be fully reliable, so add the hassle of troubleshooting that. I can see how someone might not bother with it, if they have no real need to.

Personally, I'm relatively sure I will never use bitcoin, because I pay my groceries with cash and my rent per wire transfer, and other than that I buy stuff off the internet maybe twice a year, so entering my credit card details isn't quite that annoying. I realize my spending habits are somewhat unusual, though.