Backyard camp discussion this weekend and was asked why I don't have a roof mounted tent? So thinking long and hard to come up with some scientific reason. My guest needs a science based answer for everything in life, really kinda sad lol. Gravity I said gravity is why I don't have a roof mounted tent. How is that a problem was the response. Well I am 56 years old and have been known to take maybe a swig too many around the campfire, and gravity is not forgiving. Stepping out of that roof mounted tent to visit a tree in the early morning hours there is a very good chance that gravity will show up and toss me hard on the ground below. I don't bounce anymore I just land with a solid thud and that is why I don't have a roof mounted tent, gravity.