> if the commute is no more than 15 minutes

If the commute is no more than 15 minutes, you are losing 30 minutes there and back every day, which is 10 hours every month, almost a waking day every month. Its still lost time. This is without counting the time lost in preparing for getting out of the house, settling in at work, and then doing the exact opposite when commuting back. Make each 10 minutes if you are someone who gets up and going very fast. You are now up to 1 hour lost every day, 20 hours every month. Almost and entire day or two waking days...