True, I don't drive or take public transportation for a commute so I wasn't thinking of that scenario. I wasn't thinking of a scenario where I HAD to do it frequently.
Afaik, that's how lots (most?) of the train network is used here, cheap commuting to/from work on the weekdays, and to/from birthplace/family-town/city/closest metropolitan area on the weekends/holidays. Probably true for most places with extensive train networks, come to think of it.