I'm not sure you really understand free fall, but that's tangential to this discussion.<quoted text>
Even low earth orbit is deleterious to a human's health. Bone mass loss and other things that go to hell when they are out of the gravity well they were constructed in. By just a tiny amount. The gravity is still about 90% where they hang out. Free fall is not real lack of gravity.
The body and mind were designed to work here.
For all their big talk, the physicists can't even provide a physical environment to maintain the forces we were designed for.
However, we can and have designed a habitat that accounts for the proper physical environment. Google the "Stanford Torus". This project included required launch rates and schedules, costing, physiological design considerations, etc. and was all planned in 1975. As a member of the now defunct L5 Society, we lobbied for consideration of these ideas, but science has never been that glamorous in America, so we never got too far.