[kalleboo]

If you're going into a situation where you'll end up lost or dead, then certainly yes do not rely on electronic maps.

For the average GPS-using situation, the worst case scenario is they you to start reading road signs or stop ask for help. In these cases, a GPS navigator can be very handy, such as on a road trip I took last year through an area where an earthquake had shut down a significant portion of the road network. Either I sit for hours and pour over lists of road closures and construction dates and cross them off my paper map (the info changes monthly so there aren't any preprinted maps), or just use an app that already knows everything.