Great comments with which I completely agree.
Here's my two cents:
I have never wanted a GPS for the backcountry. For me, a GPS removes one of the challenges of being in the backcountry; that of navigation. To be challenged on several levels is an integral part of the backcountry experience. The desire to be challenged should be at the core of every man; especially in the wilderness environment. The GPS removes this challenge and replaces it with a false sense of security and a lack of basic skill. A GPS removes one aspect of enjoyment and satisfaction in the wilderness - that of successful navigation.
There is a reason they still teach map and compass skills to new USMC officers during TBS...
But then I grew up in a different time with a father who taught me to value those challenges, and many don't have that blessing today.
And now for a personal experience:
One particular trip I led in the late '90s involved a Friday night hike up to Whangaehu Hut on Mt Ruapehu. I had been there once before on a ski-touring trip with my uncle and the NZAC, and now was leading a small group of friends from the university there this particular Friday night. It was dark, as nights tend to be, it was snowing as winters tend to do, and we had maps and compass only, as any good outdoorsman should. I navigated us to within two meters of the hut right on the edge of a 50 meter cliff. Of course we couldn't see the hut from two meters away, in the dark with our headlamps illuminating the cold wet snowflakes, and as we gathered just two meters from the front door of the hut the group consensus was we were too low down the shelf and we should head up the shelf and there would be the hut. Of course it wasn't further up the shelf, and once we reached steep ground we knew we had erred and the hut was down a bit further from where we were a half hour ago. And so it was.
When morning light came we found our prints all gathered together in the snow just two meters from the front door and figured out just how close we were. We never saw the hut, or the cliff that dropped away into the valley, that night. Why am I telling this story? Because if we had a GPS, and knew how to use it, we would have found the hut just fine, and the trip would long have been forgotten and filed away as an uneventful trip. Yet it wasn't. It was memorable, it was exciting, and all these years later I can still remember all the details of that navigational challenge. It was an awesome winter night hike in a storm.
With a GPS all the fun would have gone and we would have simply been cold and wet instead of cold, wet, and inspired.
Don't rob yourself of a blessing and learn the way of the map. Learn how to interpret a map, how to visualize the terrain you read on the map. Learn how to tell what's important on the map, and what's not. Learn how to simplify the map and go rogaining or orienteering and really learn some more skills with the map. It might save your life.