Interesting thread, as always it seems when it comes to firearms. I carry when I am out, always. I do so for my protection, by critter or creep. That being said, I was in law enforcement, high level security and have been trained and take training to this day. I have hiked backcountry (Sierras, NW, NE, etc.), have thru-hiked the AT, and have camped regularly since the early 60s' as a kid hunting with my father and family. I carry a 9mm when hiking, concealed 9mm when out in general, and when I feel needed, carry a Scout style rifle in .308 when camping in bear/lion areas.
As noted many times in this thread training is the key. Hitting the range at least 3 times a month, muscle memory, safety etc. are paramount for me. Coming from a hunting background, and my past, guns have always been around. I don't collect, to me they are tools for a specific purpose. Don't drink, carry or shoot.
I carry when overlanding or out on the trail as 1) Have had the need for it (camp raid by Pineys in South Jersey, and not so good humans in So Cal), 2) seen what people are capable of, 3) know when I am in an area that I may need to scare off, or defend myself from, animals (though the worst I have ever experienced was a night time bear encounter). More about being prepared (food in the right places, location, location, location). Though I have never really in all my years outdoors have had to shot off a shot but twice, both to scare off. I do feel some get a little carried away more than what is needed, and have seen many not even know how to use what they bought and show off. Like anything some have what they need, others have what they want.