Most people think of a lawn as rectangle of grass on a flat surface but most are not. In all but the southern parts of Georgia it's very hilly with most proper

Most people think of a lawn as rectangle of grass on a flat surface but most are not. In all but the southern parts of Georgia it's very hilly with most properties flowing down hill to a washout, creek, or pond. There's also a dense tree canopy over most properties older than 20 years which means lots of roots, acorns, pine cones, leaves, and pine needles. Electric mowers and robots have fragile little blades designed to weight as little as possible because they're running on batteries. They'll be damaged or break entirely if they strike a root or rock. I had to use a self propelled dual blade mulching power to handle the terrain and so I didn't have to spend an hour or more walking the property gathering all the pine codes and other crap that might stall out a lesser mower.