Rode my bike home from work last week, following the South Platte River trail all the way up from Five Points to Littleton. I felt more kinship with other blobs on two wheels than fast, toned people my age and younger—they probably only have themselves to care about, and their chocolate lab, maybe a wife and a kid on the outside chance, but not four kids. Being toned and able to ride 20 miles in half a minute is their responsibility—it’s their duty.