I started bike commuting on a 50-pound upright. It wasn't Dutch, just cheap. Nearly killed me. The upright sitting position isn't necessarily easy on the lower back over long distances, especially if there are bumps. Plus while I'm not a Spandex wearer I like to go a *little* fast. The old bike is definitely good as a short-hop grocery hauler though. And in any sort of contact it tends to be the denter, not the dentee.