grass is greener?

I found this quote in the Herald here; it struck a chord with me, so I thought I'd share.

"It is said that the grass is always greenest on the other side of the fence, and many of us rather unthinkingly believe this fairly modern (mid-20th century) proverb without realizing that we may actually be passing up a great deal of luscious, green fodder right under our feet. Grass, as any farmer or gardener is well aware, is where you find it and how you treat it. As there is not just one grass but a vast number of different grasses provided by nature for our choice, the possible combinations of colour and usefulness is equally vast" (Dereck Foster).

(The author then goes on to speak about an excellent fish restaurant in his neighborhood.)

What happens when there is no grass under one's feet to even reject but rather cracked, uneven tiles that causes one to easily trip and sometimes fall? Perhaps in a puddle? What does this do to a person's psyche, I wonder?