Do you actually like your job? I don't mean any disrespect, but I've had jobs I don't really like and I get where you are coming from. Right now, though and at other times, since I've had my own companies, 6 day work weeks and 10-12 hrs a day was not even an issue. I feel like if people go to 4 day work weeks, people that love their jobs and are willing to work 1.5times as much or more will have a huge advantage over the long haul.