Grass really, really depends on location and climate. I literally never water or fertilize my lawn; it looks fine.

The worse thing here is ecological. I keep my mower set to 4", and keep my lawn a bit longer than my neighbors. I see a ton of fire flies in my yard in the summer, and see a fraction as many in my neighbors yard.

Short lawns are terrible habitat, which makes them good for sports or a children’s play area. But 80% of my neighbor’s lawn is just aesthetic, which is something I really don’t get. Lawns are about as visually exciting as a beige wall. They’re a waste of space.