After a while, (n<10) hour workweeks aren't that much fun, for most people. You can only kickbox/travel/party for so long before life become meaningless and uns

After a while, (n<10) hour workweeks aren't that much fun, for most people. You can only kickbox/travel/party for so long before life become meaningless and unsatisfying. Personally I much prefer 37signal's "4 day workweek", where you have plenty of time for yourself but are still working and creating something of value which you care about.