I used to live near bear/mountain lion country, and when I was camping in the Huntington Lake area, or further into the back country around Wishon or Courtright reservoirs, bear were common sights. I agree completely bears are not predators, but they also are not to be trifled with (don't get in between one and an ice chest) or surprised. Sometimes you get one that is more aggressive about rummaging thru camp sites, dumpsters and cars, and the local sheriff will go around and check to make sure everyone is armed. There's almost never any need to shoot a bear... One shotgun blast into a berm off to the side and Mr. Bear will be hightailing it as fast as he can in the other direction.
Mountain lion, on the other hand, are entirely different. Several years ago a friend of mine who was a deputy sheriff for Fresno County related a story: A lion had attacked a hiker, was still in the area and the Sheriff's Dept dispatched a team to put the cat down. They used the department's air unit which had night vision, and the chopper was able to lead the team up a mountainside towards the climbing cat. At one point, thanks to the chopper's night vision, they were made aware that the cat had come down ... and was circling to come up behind them.