No way I'm plugging a random USB drive into my computer. I wouldn't even plug it into any computer on my network. I feel twitchy when I buy a brand new one and plug it in for the first time. Screw that.
Nice idea in theory, though. Unfortunately, the theory... like so many others... doesn't account for the existence of assholes.
Is this because you are using a P.O.S. Operating System? 8-)
I have no fears plugging (my configuration of) Debian into anything.