Whether a compressed work week is a good choice depends to a great degree on circumstances.
In areas where the average commute is very long, many workers prefer a compressed week because it saves commuting time and money. For example, in some cities such as Los Angeles the average commute is two hours round trip. Working four 10-hour days rather than five 8-hour ones eliminates not only commuting time but the associated costs and environmental impact of commuting.
A negative side of the compressed work week is that it can limit time with family on work days. Also, in jobs which require physical labour or sustained concentration one may not be as efficient at the end of a long day.