Rickk, my property is surrounded with oaks so with the amount of litter I get from them, its nice having the sides so leaves don't litter the inside or get all over a fresh laminate. The sides also help to help keep temps down for longer in the morning under the shade. And last but most important, the humidity is much more maintained (dry soil below inside enclosed area) after rain events so I am able to get back to work quicker. The end walls have roll up zipper panels and with the fan, air movement is pretty good with just the end panels open.
What I really need is a large enclosed conditioned shop!!!! haha