I've never felt the need to write a review on IMDb, but the few people who don't give this show a high rating seem to be the only ones writing reviews.
Alone is not so much a survival show as a psychology experiment. The contestants are dropped in a dangerous wilderness with just the barest necessities and left to their own devices. Besides having to find shelter, food, and drinkable water, they have to deal with being alone all the time for as long as they can stand. Some of you probably don't realize how hard it is to deal with loneliness. Just watch a prison show and see how people break down in solitary confinement.
The one thing they have for company is a little hand camera, and the contestants that last long enough really open up to it. The longer the season lasts the more they bare their soul for all to see. To me it's the most fascinating TV I've ever seen. It makes you appreciate your food, your home, and the people around you more, just by showing you were you'd be without them.