i was going to say they are quite good at dropping big branches at the wrong time... i can see the benefit of being in a tree when there are wolves and stuff around but i dont think a rabbit attack is a good enough excuse
Sorry folks but I fail to see the point unless solely as a novelty!
The only explanation I can think of for anyone wanting to sleep up a tree is that they've never been cold, wet and miserable.
even this idea has no "practical" purpose, it does look like a good laugh and something I know I'll regret not trying *grabs hammock and heads off up to the woods*