Were you riding your bike indoors in a public place? No? Then why would you expect to see anyone in masks? Really solid argument there.
My wife is an RN, and neighbor/friend is an MD. I'll take my advice from them about this pandemic. We don't wear masks when biking or taking walks. Just in stores/public indoor spaces.
Enjoy your freedom to not wear a mask, no problem. Right up until all the shutdowns again when the 2nd wave hits. Which by the way will cripple the economy much worse than the 1st wave. Why can't all the knuckleheads just take one simple step to try to do their part to slow the spread? "Cause we're Americans, and we have freedom, dangit!" With any luck Darwinism will once again win out, the herd is thinned out, and the collective IQ goes way up. Society is better off in the long run.