It's worth noting that Stuxnet was very careful not to even reveal its capabilities if it happened to infect a non-target host. It was still a very targeted attack, and not "everyone had their bank accounts hacked" risk.
(It still infected untargeted PCs, and might have caused them to misbehave, but not intentionally. Stuxnet was designed for stealth, not for mass exploitation. You the average PC owner has very little to fear from such targeted attacks, you're not worth the 0days.)
