Well one arrives at such silly average because some have 0 commute and others have very long ones. Ever since we settled as a species, there was no commute to speak of - farming, merchants, blacksmiths all pretty much lived where they worked. Commuting to an office is recent invention and was perhaps necessary before internet, but in my view it feels a bit archaic now, and a waste of time. There is social aspect of course, so if you want social interactions, I'd say they should be deliberate and not some chance side effect of driving to a crowded city centre.