I used to commute regularly in my previous job but it totally killed biking for me. Since changing jobs though and using my car for work and my bike for pleasure i found my mojo again and have clocked up 1500 miles of riding heaven since last june
New Haven is a pretty small town. My 'work' is either a desk at home, or an office at the department ....about a 5 minute walk up the road.
That said, I also write a lot at coffee shops (we have about 15 in a couple mile radius?) and cruise around town all the time on my beater bike-- an early 80s Bianchi Alloro turned fixed gear. A few mtb bits--Dia Compe Advantage 5 levers, San Marco/Bontrager saddle, and a Blackburn Mtn Rack
I've worked from home for the last 3 years.
I still miss the cycle commute from one of my previous jobs though. Cycling is a great way to start the day.