My first bag lasted for over five years of heavy abuse -- often overstuffed. The amount of storage, cleverly divided for handy access to anything you might want to keep, is tremendous. The outer back pocket is perfect for slipping in a newspaper or other in-transit reading. The two outer front zip pockets are convenient places for keys, change, id's.
My bag is still 100% solid with no lose stitching, no fraying seams, no malfunctioning hardware. But, it looks like it's been dragged behind a cab through the streets of Manhattan. As I ordered a new one I almost felt a twinge of guilt of retiring a trusted companion. Maybe it's funky enough for one of my kids to adopt!