If you're opting out, you're already not blindly following their orders. So why would you stand right next to the machine just because they said so? I make sure to stand a comfortable distance away, and if harassed I tell them that's as close as I'm comfortable with. It also seems to cause a bit of confusion to the lemmings going through the microwave^wmilliwave, who feel bad about cutting in front of me. I also wouldn't be surprised if that turbulence causes the molester to arrive quicker than they would otherwise.