Not usually. This will be my first summer w/out ac in many years though, so it might become common.
My thing is that I hate wasting time getting changed. I wake up everyday put on a button down and khakis or some variation, and 99% I'm good to go anywhere (work isn't too dressy). By the same token, gettin' nekkid means I'm going to have to put clothes back on if I want to go to the store or some shiznit.
guess that's just me though. I hate wasting time (unless I'm getting paid...like now).