I like griz as much as anyone else here, as I firmly believe that their presence defines true wilderness. We must make a serious effort to ensure that they always have a place to live, and to thrive. I also am a proponent of carrying pepper spray.
However, there is another consideration that is seldom being discussed. In the two most significant Lower 48 grizzly habitats, the Greater Yellowstone and the Northern Continental Divide ecosystems, the grizzly populations have been increasing at a fairly healthy rate over the past 30 years. As this occurs, there becomes less and less room for each bear, and they must roam further and further toward, and even across, the protected perimeter to find food. This means that ranchers outside the wilderness are having confrontations with grizzly bears. Occasionally a sheep or calf is killed by a bear for food.
In my small home town of Choteau, Montana, which is situated 15 crow-fly miles east of the Rocky Mountain Front (behind which lies the Bob Marshall Wilderness Area), there have recently been griz sightings on the edge of town. So far, it seems that the griz/civilization issue has been managed reasonably well. But with the ever-increasing bear population, it seems inevitable that there will be an increase in bad-outcome encounters between bears and humans. Grizzlies were originally a plains animal, until white men settled the land for ranching and farming, which forced the bruins up into the relative safety of the mountains. It's only natural that they would return to the plains in times of crowded mountain conditions.
I don't have a solid solution in mind. I'm hoping that the wilderness managers do, and that they act before it is too late. One thought I have, and one that is shared by several of my anonymous Park Ranger pals in both Glacier and Yellowstone, is to occasionally cull the herd. Have a limited hunting season from time to time. This would increase the relative amount of room per bear, and it would also serve to let the bears know to not mess with people (like it was 100 years ago).
I truly have sympathy for the friends and family of the two Yellowstone victims of griz maulings. But I don't at all buy into the Yellowstone official statement that the Wapiti mauling was a natural event, where the sow was protecting her cubs. That bear charged from 100 yards away, when the couple was not an immediate threat to the cubs. That bear should not be given a chance to repeat the event. I believe that if there is any doubt, take the bear out. There are plenty of bears, actually, and the mountains belong to humans as well as the bears.
Hope I didn't step on any toes here, I just wanted to point out another consideration regarding bears.
Edit-I took so long to write my diatribe that Joe and Mark beat me in defining the concept.