Not to minimize the mussar value of this thought, but if our lives and aveiros will be on view, so will everybody else’s, right? Those in the Olam Haemes before us will have gone through this themselves and those who haven’t will be thinking about when it will be their turn.
A more potent mussar would be for us to imagine that our intercoms are on all day, or our windows are open, or the front wall of our houses are not really there, or the camera on our computer is actually beaming what is happening in our house out into cyberspace, and everybody in THIS WORLD is seeing and hearing what we think we are doing in private.