I've spent the best years of my life living in the woods and in wall-less huts w/ no water, plumbing or electricity. Imho our modern conveniences don't make life any richer, and in many cases take away the pleasure of things we take for granted. If I had medical problems I would probably feel differently.
Uh huh. What were you wearing? Did you sew your own clothes and grow your own cotton for those clothes? There's a surprising amount of "on the grid" work that afforded you the ability to live "off the grid".
There's also a big difference between living in a part of the world where the woods provide a relatively temperate climate. Try living out in the forest to Papua New Guinea with 100% humidity.
By the way, try to make sure you don't accidentally get bitten by a rabid animal because the cure for rabies wasn't invented until the 1880s.
I feel like you are probably taking a lot of things for granted. Clothes, food, equipment, vehicles, etc. Heck, even just the ability to choose to live in a hut in the woods.