I love riding for any reason. Commuting just happens to be another excuse to get out on the bike.
Unfortunately for me, three days a week I have to drive due to needing the car for my evening job directly after work. Those days I sit in traffic getting irritated and jealous of people whizzing by on bikes.
I usually commute Tue/Thurs after an early morning group ride, do a pre-work ride on Wednesday and ride both weekend days. I've found I generally need Mon/Fri off, but still suffer the no-ride blues those days...