Having commuted for 20 years by bike, bus, train and as passenger in cars; mix it up. As I teach it gets a bit hard as I get older. Do you have a desk job?
The best thing to do is to mix it up,so it becomes a treat; riding in the dark can be fun, but not ten times a week.
My commute is a ten mile ride to a train station then the train, with my wife help we worked on variable days you drive/drop off or pick up/ I buy wine, petrol and have a chat without kids around, with the odd pub stop, then always cook ( in fact I cook 80% of the time)
Do it at least once a week, its good for the soul.