I've never been scared when being by myself in the wild. At least not if I'm far enough out. Nothing out there to be scared of. Bears are more of a nuisance than anything. Hang your food and keep some good size rocks nearby to throw at 'em. They'll go away.

I've always found it much scarier to be alone in the typical drive in and park your car type of campground. I've seen some pretty weird people at those places. I was once alone at one particularly creepy campground deep in the forest near Mt. Hood, close to Portland Oregon. This place was dark even during the day and at night I was scared shitless.. I kept imagining some axe murderer who roams around campgrounds at night looking for his victims.