Amazingly, even many of my friends who hunt and fish and fancy themselves "outdoorsmen" ask many of these questions about my short section hikes (I'm not thru-hiking). Especially the questions on guns and GPS's. Some state the dangers of bears and other wildlife and getting lost. FWIW, and not to PO anyone or start a debate, I do carry, but do so almost all of the time anyway - but certainly not because of danger from bears. A gun is definitely not necessary. It further amazes me that so many of these guys are so reliant (over-reliant IMO) on GPS, which while I might consider carrying as a navigation convenience, I would never trust as my only navigation method - that map and compass stuff remains pretty foolproof. Ask many of these guys to go on a hike and I guaranty many would show up with a 60 lb pack with saws, hatchets, 8" knives and all sorts of other interesting gear.