Mine is not my commuter since parking is hard to come by at my place of employment but I occasionally drive it if it's nice out or I'm running late. Most of the time I use my 92 Accord and leave that at the local Park N Ride. I personally would never leave the BMW there too many careless people rushing to get out their car and catch the light rail. Seen door dings plenty of times myself at least 5+ times during this past year during the morning commute.
I try to make up for it during the weekend by driving her as much as I can and plan on taking a long drive in Sept. back to SF.