... and users of household VPN's or any number of responsible security measures an individual should take online these days. The fact that a law-abiding citizen has to be afraid of being on some list speaks volumes about where our population and government stands today.
You do not need to be actively hiding something illegal (re: DanJ's comment above) to justify using something like Tor. This little product will make it more accessible to less tech savvy people. The more people using Tor, the more effective it is.