If there were protected bike lanes along my commute (about 3 miles), I'd cycle to work in a heartbeat. (Well, showers at the office, preferably clean ones, would also help.)

Instead, only about 25% of the trip has bike lanes at all. And they share a curb with the buses (which might be the worst arrangement possible, since cyclists and bus drivers have to keep dodging one another in and out of the lane - endangering the cyclists and slowing the buses).

Instead, I walk when the weather is right. Cycling right beside cars would scare the shit out of me.