The danger of traveling alone in the wilderness is overblown. Various agencies insist that venturing into the backcountry with a companion is the only prudent thing to do, mostly out of a fear of being sued if someone is hurt on a solo trip. As long as a person does not exceed their abilities, I recommend solitude in the wilderness. You'll never feel more alone or vulnerable. Sadly, we are rarely exposed to those feelings; everything is comfortable and under our control.
http://www.morganhilltimes.com/sports/257684-get-comfortable-out-of-your-comfort-zone