not all of us have the luxury of an extra hour a day or miles of bike-friendly road to just jump on and go at a whim.

I'm not saying that riding for pleasure is not possible in urban environments (far from it), but my day is often compounded with work and classes and this means no time or energy at the end of the day to head out for a long ride.

anyways, this is besides the point. As most of my trips are around the 15-minute mark (again, urban environment), it's a good guage for me to estimate comfort.