I couldn't agree more
ISS was to have had a gravity experiment module known as Centrifuge Accomodations Module. I believe it was canceled, probably because it was too small to accomplish much, but it would have been better than nothing, and better than many of the useless activities going on up there.
Gravity research is critical to our future in space. It should not be that difficult, or take that long to scale our tolerance for various levels of gravity. I am inclined to believe that Mars gravity would be sufficient to sustain long term health but my hunches are worthless.
How can something so fundamental be overlooked for so long?