Another hypothesis might be that people know on some subconscious level that the real threat in the world is other people. I don't mean threat in the sense that

Another hypothesis might be that people know on some subconscious level that the real threat in the world is other people. I don't mean threat in the sense that you'll be killed but in society there is constantly a power struggle, as a man you try to climb the dominance hierarchy or if you don't try to climb it you feel weak because you know deep down that you're not top dog and there's a lot of consequences to that status etc. Where as if you go somewhere where you're certain there's no other people around then you're free of all that, free to express yourself without worrying even a little about other people judging your every little movement, every behaviour.