Originally Posted by FBinNY

So I guess that the vast majority of bicyclists are totally daft.

Nothing wrong with mirrors, but for my purposes, where I'm passed by hundreds of cars per hour, I can't make practical use of knowing that a car is coming up. By the time I can determine that he's not going around me, it's too late to make use of that info.

I'm aware that a mirror could be very handy when I ant to make a lane change to the left, but so far I have the ability to do that with a head turn. That may change with age, which is why I say so far.

Mirrors exist, use them if you want, don't if you don't.