You might be surprised about gun forums and backpacking. Many firearm enthusiasts are also outdoors enthusiasts, myself included. I spend a lot of time on a gun forum, and i've mentioned backpacking there a number of times and gotten extremely positive responses. I've seen a lot of other posters experience the same. I got some great advice on a revolver that I carry while hiking from that forum.
Myself, I carry even when i'm in the city, so if i'm going into the wilderness, i'll definitely carry there. I'd say the city is more dangerous as far as human predators go, but the outdoors has plenty of applications for a firearm.