If you want to live off the land do it, you're cowarding yourself with excuses. Or, suck it up and admit, like the rest of us you enjoy civility and modern luxury.
Plenty do it, they still have homesteads, you can leave the country and hack it off the grid, you can buy some cheap land and cut yourself off, or you can hobo it.
We have friends who love their extremely off the grid lives, it just takes real passion and guts.