Why walking on roofs are so attractive?

Is it because it not authorized?
Is it because to find the exit out to roofs is not easy?
Is it because it is not safe?
Is it because the view from roofs is very different and special?
Is it because roofs are closer to the sky?
Is it because roofing is a fast transition from city noise in privacy, almost silence and … zen?

Yes, all of those and something else, different for everyone. Roofs different, different views from them and feeling too.