I smile when I remember the guys at my old LBS always working on certain cheap bikes for free. There are a couple of mentally-disabled guys who roam around the town doing odd jobs, always on the fringe, but ride their bikes everywhere. One of them thinks he has to have completely fresh air in his tires every day. The guys patiently deflate and inflate his tires every morning and work on those "special" cheap and cranky bikes for free. Customers will sometimes pitch in with spare parts scavenged from similar bikes dying in their garage.

This really makes you smile.