I guess I would be fine if I was trading those 4 hours of freetime I normally would get on Saturday for 4 hours on a weekday. But that doesn't seem to be what's being suggested.
Also, given the nature of how our days are organized in society, there tend to be events that happen on the weekends that do not happen on week days to accommodate people's work schedules - concerts in the park, community events, social events, etc. so moving some of your work to the weekends will mean you could miss out on those.
I guess I would be fine if I was trading those 4 hours of freetime I normally would get on Saturday for 4 hours on a weekday. But that doesn't seem to be what's being suggested.
Also, given the nature of how our days are organized in society, there tend to be events that happen on the weekends that do not happen on week days to accommodate people's work schedules - concerts in the park, community events, social events, etc. so moving some of your work to the weekends will mean you could miss out on those.