What are your thoughts on living off-grid?

My aunt did that in the house my mom grew up in. They had a small two story out on the prairie. Had an outhouse an a windmill. The ground stayed very cold so the well was their refrigerator too. They heated the house with wood. Had cows, pigs and chickens and a big garden. Stove was a wood burner with a big tank on the side for heating water. A pail of water and a big dipper was out on the porch.
They slept upstairs. She lived into her late nineties as did the rest of the family.