We don't need no stinkin guns.....
I've been camping in Colorado for most of my life, and have never seen a bear, Mntn lion, or anything that could take me down. Also, my brother who usually camps in Arizona has never shot a gun, and probably never will, but has had encounters with wild boars and wild horses.
Years ago while camping in Park Cnty. CO, I was driving over Mosquito Pass when I encountered a guy who rolled his Subaru off the side of the mountain, and claimed he had been there for a week. The guy seemed desparate, and made me nervous. I was glad to have a gun with me that trip. The local Forest Service office told me they don't do vehicle recovery, and would recover his body if it came to that.
A few months ago, a kid was taken from his tent while sleeping and killed in Utah by a black bear. Apparently the same bear tried to get into another tent a couple nights before. In that case, the campers shot a "warning" shot which scared the bear away. It was the first time a bear had killed someone in Utah since they have been keeping records.
I usually feel safe just having my CCW gun (XD-9). It's pretty rare to hear about someone being attacked by wild animals, but it does happen, especially to children/smaller adults. You are probably safer in the woods than in the city.
It's good to have a weapon, but you probably don't need (hopefully) the whole arsenal.