My morning ride through Rock Creek Park is one of the best parts of my day, and it’s even better in the rain, when joggers and other distractions are few and I can ride in a head-clearing Zen state.

But the bike path is covered with squishable threats to this Zen state. Namely, worms, who for whatever reason, crawl out in the rain. If you want to avoid them, you end up swerving around like Monsieur Hulot. If another cyclist is approaching, avoiding worms is downright dangerous! So this is my question: Is it OK, morally, to flatten a worm when your safety and that of others is not in question? Or should one ride in a state of vegetarian terror?