I believe it can be a personal preference and I'm with the OP. I've had self dimming mirrors for the past 10 years and didn't care for them. My LT has a manual mirror and I happier than a clam.
Why do we need to automate something so simple as flipping a little lever?
AUTOMATION IS WONDERFUL...........
I have several cars with the dimming feature, what a great invention -- like sunglasses that darken in the sun, only these mirrors tint at car lights. Fantastic tool for the VOLT.
I have a car that does not have the automated tinting rear view and side mirrors. That handle flips then it is too dark. Not good.
WHAT I DID........
They sell a curved mirror, used to be available like crazy at KMart but you occasionally find them at other retailors. They already have a slight tint to them for daytime and the curve gives you a wider view of the rear and (sort of) side. It also makes the bright car lights look dimmer at night ( no help for the side mirrors ). This curved mirror is one of my favorite mirrors second to the self dimming mirror.
INDEED have your eyes checked... if you are approaching catarak territory, it is not nearly the big deal it was in the past. I have had both eyes done and they don't put you to sleep while they do the lens exchange, no pain, no feeling, nothing. Done in one day and you are back with good sight again. Jus saying.