Why Do People Mow Their Yards? Is this the most superficial practice of modern society

In my sociology classes as an undergrad, we discussed in detail that people throughout history have had a desire to imitate the upper echelon of society, thus the reason that people have been so keen, and taken so well, to the idea of suburbs.

Everybody gets there own little kingdom, with a stable (garage), walls (fence), etc....you get the idea.

But my question to yall is this: Why do people care so much about mowing their lawns?

I just saw a commercial about a "cub cadet" drivable lawnmower or some shit and was just blown away at the superficial nature of everything they were advertising to.

I mean, I personally like the "natural" yards that I see sometimes, but when was it ingrained in our society that one has to keep their yard trimmed at all times?

And not only that, but if you want to be awesome at cutting grass nowadays, you basically need a grass cutting car.

What happened to the lawnmowers I slaved over as a kid? You know the ones with 4 wheels, but you push it? And why does it matter to cut the grass? Couldn't the ground used for something much more meaningful than the superficial purpose of planting unnatural sod?

Just please help me understand why people are so anxious to keep their yards awesome. Does it go back to the envy of royalty, bread into our bloodlines, which causes us to slave over stupid grass?

What is up with mowing?