It used to baffle me when people would say that doing all that cleaning was "preparing" us for turning the earth into a paradise.
This makes too much perverted sense.
One of the most confounding things I have ever read about the WT's "good news" is that after God brings hell to earth, the happy surviving dubs get to whip out the mops and brooms. And hope they have a lot of hydrogen peroxide to get out those stubborn blood stains everywhere.
Maybe that's why they also encourage all those housecleaning and window-washing careers.
bebu