Yes, I do (and thanks) except for days where I have to run an errand or something where a bike just wouldn't do.

I keep a small locking cable at the office for unplanned trips such as a run up to Woburn Mall for a sandwich. My company calls for random spot drug checks so I've gotten a email summons a few times to go to a particular medical center in Wilmington. That's 5 miles from the office, which means an unplanned 10 mile round trip in the middle of the day. (Productivity, ah, doesn't improve in such cases.)

Anyway, all that distance is one reason I prefer to commute on a nice road bike. Good roads make that possible. And I like to go as fast.