Hey, you – are you one of those people who uses the self-checkout at the grocery store and then pays with a handwritten check?
Do you realize that this is actually slower than letting the cashier ring you up, because you could be making out your check while they scan items? And you wouldn’t have to walk it over to them for approval? And you wouldn’t have to walk back to wait for your receipt?
In short: you’re being dumb.
Now, knock it off.
Note: A similar sentiment applies to those people who wait until the cashier is done ringing them up to remember they need to find their checkbook, as well as those who will spend three minutes looking through every produce menu on the machine to find “cilantro” rather than just reading the PLU codes on the sheet taped to the machine.