Having a large aerial view is one of the great arguments for the map over the GPS, or at least along side. Even the largest screen on a GPS is only a couple inches big. A map can show you tens of kilometers all in one glance. Where's the nearest road or water; what's on the other side of that hill. They also allow spontaneity, since you can see things you might not have known about. I've got a map of post on my wall about 25km square which shows topography, roads, trails, buildings and rivers. I love being able to look at a map and see exactly where I am in relation to my surroundings.

Also, if you find maps cumbersome, consider folding it like THIS . It feels a little destructive, but its really useful.