For me, working from home these past 7 years has added this same kind of balance to my life. Chores and errands became easier to fit in, exercise at noon literally is a matter of stepping outside to bike, run, or hit the gym. It saves 10+ hours a week of travel, less stress and expense of commuting, and did I mention I don't need to shower until after my noontime workout?

Granted, at times I'm on the job until late at night, to get things done and, sometimes, to make up for an extra long shopping excursion etc.

A 4 day on-site job would feel severely disadvantageous by comparison.