I keep the lawn for a few reasons. First and foremost, my one-year old daughter absolutely loves being outside and always have. She was out crawling in the yard at six or eight months old. It's allowed her to get a nice amount of sun and outside play without worrying about her falling on rocks and gravel.
I also like the grass because it helps insulate the ground against the sun's heat. During these extreme temps, dirt and gravel can both get extremely hot. A plot of grass is comfortable to walk on no matter what the temperature. All of my girls are bedding down on the grass in the evenings and being lazy. (snipped)
Oh I love grass; I love to walk barefoot on cool green grass; that is total heaven. I get to do it once every few years when I'm at a big park at the right time of day.
In the future I hope to have a small patch of grass just to walk barefoot on. Maybe 6x8' I have no grass now because here AZ Water Co. just raised their rates and they were high before. My water bill last summer, with one person in the house, swamp cooler running only about 6 hrs a day, fruit trees and garden was $175 a month. In contrast, in the winter my bill runs $25 tops. So around here if I can't eat it, it doesn't get watered.
In Minnesota I used to get up early and walk out bare foot on frost covered grass. It is good for your circulation, if you have arthritis it seems to help.