I agree Zero turns speedup the big grass cutting job but I also see people who could easily cut their yard with a self propelled walk behind mower or conventional lawn tractor on zero turns. Since the commercial guy have gone to them they have become a status symbol in subdivisions like the F 250 dooly diesel pickup of years past when everyone wanted to play 18 wheeler driver to go 5 miles with no load or no trailer.
Actually, that reminds me of my neighbor who had a dually that he drove to work daily I think he got tired of driving it after a year and downsized...