I would probably try to get on the list. I'm not too worried about having the governments tracking my comings and goings, they do that already very well.

I always thought that leaving the US was something the gov never bothered to track, until I applied for INSPass. There were all my comings and goings for the last year right in front of me on the INS screen.

The airlines keep track of our travel so it would be very simple for the gov to hook up to those databases and get a list of our domestic travel as well.

Put me on the list, and let me go through the airport security a bit faster, or rather, let me arrive 45 minutes before departure instead of 2 hours.