Lawns are deserts, they support very little ecologically. Fewer insects means fewer pollinators, fewer birds, fewer frogs and lizards, fewer bats, which in turn means fewer raptors and other key predators.

They also take a heavy chemical, water, time, and fuel load to maintain. Especially in arid areas, where turf grasses need lots of support.

Who wants to live in a sterile landscape? I'd much rather see bumblebees, ladybugs, butterflies, mantises, flowers of all types, beetles, birds, amphibians, reptiles, and bats hanging out nearby.