It's naive to think that there's no chance of getting harrassed out there. All you have to do is watch the news. Just last week there was a "crime spree" in the Gorge at several trailheads. One woman was "sexually molested" while her husband watched helplessly. It was on all the news reports. If I'm out in the woods and I see other hikers with packs on, I don't worry about them. The farther from the TH, and the larger the pack, the less I worry. But anywhere within a mile of the TH is prime territory for crime. There were those 2 rangers assasinated in Ecola State Park a few years back and a couple robbed at gun point above Multnomah Falls. And remember those 2 brothers who were shot in the back by some target shooters on Larch Mt.? And lately, it seems there's frequently reports of people being murdered at the coast.
It's also inaccurate to say that if you carry a gun you will shoot it. I know of several hikers who have been carrying for years, and have never once used their gun. The gun stays in a safe but accessable place and no other hikers ever know about it exept their closest friends. Carrying guns does not equal being paranoid or trigger happy. It's just means you're ready if you need it.
I read a Falcon Book that documented a few dozen cougar attacks which made me realize a couple of things:
First, you're not likely to ever know that there's a cougar nearby unless you're being attacked by one. There's been some exceptions, but usually the first clue a hiker/jogger/etc. has is when a cougar has the victim's head in its mouth. So you're not likely to ever walk past a cougar who's just lying there soaking up the sun and minding his own business and shoot him just because you're scared. Either he is a threat or he will make himself invisible and you'll never know he was there.
Secondly, once the attack has begun, there's no negotiating/pleading/reasoning with a cougar. There's only one means of escape, and that is to kill or maim the animal, meaning someone in the group needs to have a gun or a large knife on hand. Unfortunately, these same rules often apply to 2-legged attackers.
I've heard a few hikers talk lately about a Nylon gun. It's supposed to be very light weight.
And the Lord said, "Escape to the mountains." Gen. 19:17.