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Every single aesthetic feature you see anywhere is the result of this.
It's why we have grass lawns and consider our "fancy" clothes fancy.
Some rich fuck decided to flaunt their wealth and a bunch of dumbass poor people started doing it to
I'm not rich, but decided to flex my landscaping muscle and have the greenest lawn by simply mowing twice per week and not picking up the clippings. The clippings breakdown and provide nitrogen, making a green lawn.
My neighbors have light green lawn and pay a landscaping company...
If you want to get next level green, plant a nitrogen fixing plant, like clover. It won't directly enrich the soil as it'll only fix as much nitrogen as it can use itself, but when you mow your lawn and the clover bits biodegrade, that'll increase your soil's bioavailable nitrogen content. Decades ago in the UK, it was considered a source of pride to have some clover in your lawn.
I did that to the back yard actually. It's super green.