Better quality - Photographs are shot typically from 50 to 200 feet and have a greater level of clarity because of the close proximity to the ground.  Higher altitudes tend to “flatten” images.

Fewer limitations - FAA Regulations do not allow full-size aircraft below 1000 ft over populated areas

Cost - affordable -- a fraction of the operating costs associated with full-scale aircraft

Safety - No life is at stake inside an aircraft should a malfunction occur.