I don't set out in the rain but I don't let moderate chances of rain make me stay off the bike either. I've been wet before and I'll be wet again. I figure that my skin is water tight and I'll get to change clothes when I get where I'm going. That said, try to avoid the painted arrows and crosswalk lines, they can be slippery, ditto steel strips on bridges and steel bridges themselves, give yourself more room to stop and accelerate more slowly, assume you are even MORE invisible, I stay on the highest/driest part of the road, and if you're going on a long trip pack some good rain gear.

We all like to think of ourselves as rugged individualists. But when push comes to shove most of us are sheep who do what we are told. Worst of all, a lot of us become unpaid agents of whoever is controlling the agenda by enforcing the current dogma on the few rugged individualists who actually exist.