That explains it. I've stopped using vending machines about that long ago. So my experience was with the older machines. Which doesn't make my experience wrong

That explains it. I've stopped using vending machines about that long ago. So my experience was with the older machines. Which doesn't make my experience wrong; just out of date. And yes that comment about super frustrating is right. You dug around for coin or currency the machine will accept then got cheated, you were out of luck. Wasted 2 or three minutes and you're frustrated and still hungry/thirsty and out of options. Probably why the memories stayed fresh so long.