False dichotomy. Life isn't and can't be completely safe. But abandoned structures are considerably more dangerous than much of life (with the exception of car travel, which there's a cultural bias that leads people to ignore the risks of. Frankly you have to be crazy to get in a car in this day and age, but that's another argument). Building codes and fire escape requirements exist for a reason; sooner or later a lot of people will die at an event much like this one. It's unfortunate that there's no way to legally accept the risks of something dangerous, but it would be very difficult to make such a thing legally rigorous (if you can come up with a good proposal it will have my support).