As a bicycle commuter for about four decades, here are the many reasons I am in your way. The one space that, in theory, a bicyclist should not be in your way is in a bike lane. However, these are often beside a parked car. Having been hit and injured by a car door that accidentally opened in front of me, I cannot bicycle near a parked car. It is not possible to see if a car driver is in the car when approaching it, so the only safe alternative is to ride a bicycle quite far from the parked cars.