Rooftopping is not about hanging yourself from the edge of a building.
Skywalking has been promoted in the media as rooftopping, incorrectly.
Urban exploration is not about taking silly risks with your life. Urban explorers take photographs, are careful as they explore, don’t litter or vandalize and they make it home again to upload their photographs. Taking photographs is not to prove you were there, or show how much of a thrill seeker you are. The photos document the place you visited, not the fact that you, in particular, were there. Rooftopping is not performance art.
Some explorers like to be underground in tunnels, drains and other types of big holes in the ground. Some (maybe the same people) like to be far above ground, to see everything from a new angle and look at all the city lights.
The first rooftopping photo was taken in Toronto, Ontario. The photograph showed the city far below with the photographer’s shoes hanging over the edge of the tall building they were sitting on. (Note, sitting on, not hanging or dangling from).
If you enjoy dangling yourself from a crane join a circus or take up construction and learn how to do it safely. Have some care and respect for yourself and be here (relatively undamaged) for your own further adventures, tomorrow.