1) I often HEAR that "SatNav makes it easier to get around in unfamiliar areas, so I often use it as a tool."
2) I also often HEAR that "You can't get around in [where I live] or do your job without a SatNav".
3) And finally, I often SEE or ride with someone who will NOT leave their house or drive their car unless the SatNav is on and programmed to their destination. They would as soon think of driving down the road buck naked as ride without their SatNav, and they are Dumbfounded and Gobsmacked that I don't own one and yet travel all over the country all the time.
I know the difference between "tool use" and "addiction"!