Wow, lots of Luddites!
While I admit that those in the Military should be able to use a map and compass and that if you're driving somewhere you ought to be able to use the A to Z or a road atlas -- those shouting "USING GPS IS STUPID I CAN USE A MAP" are either genuinely gifted map readers/navigators or missing the point.
GPS controlled Ships are a new invention used to increase the number of ship and decrease the number of crew needed -- of course every ship could have a navigator with a sextant and a chronograph but that would mean ships would take longer to navigate and the lack of precision may mean longer time between ports.
Yes, you can count your steps in a combat situation and take bearings -- but if you have GPS that works and your enemy doesn't it could certainly work to your advantage (especially if coupled with very good/satellite mapping).
Yes, most missiles use terrain matching and inertial sensors to navigate as well as GPS -- but DARPA are struggling to make them work without GPS.
Yes, if I get lost in down town LA I could consult the map (if I have one) and read road signs (if they haven't been ripped out or turned around) or I could ask those nice men with red bandannas for directions.
I also seem to recall that flight times between the UK and US have been cut due to improved routes that are largely down to accurate GPS?
In short: Navigation without GPs is possible -- but is solves problems that a map and compass can't and it enables things that can't be done without it. As someone has said above, saying people should be able to get by without it is about the same as saying "ONLY PANSIES USE GPS -- REAL MEN DON'T NEED NO STINKING GPS".