oh yeah.
before I got the floor done it was like climbing around in a jungle gym.  There WERE no flat places.  Everytime I set something down..it'd fall over and roll to the bottom.  Having a floor is a LOT nicer.

once  I fell down myself...
I rolled to the bottom.. and lay there...cussing a blue streak....feet and arms sticking straight up...like a fat turtle on it's back.
I not only bruised 'certain places' but my ego also.