So, what makes a red dot sight so unacceptable to you? (I anticipate some spirited discussion, but if we can maintain civility, it may prove more useful.)
There are a number of things.
First, I use the top of the gun itself, not just the sights, as a coarse aiming "thingy" for close shots. Anything that changes the shape of the top of the gun makes it less usable. In this instance, its the same factor that makes a Glock a non-starter for me. The square, flat top simply does not lend itself to that shooting technique the way a rounded top does. ... and neither do dot sights.
Second, I do not like stuff on top of my handgun. Iron sights and nothing else. It is, to my eye, clutter.
Third, complexity / reliability. My iron sights are always on. I don't have to flip switches or squeeze dingly things to activate them. Batteries don't wear out, etc. I don't have to periodically stop and check iron sights to make sure they haven't quit on me.
I could probably think of more but that's enough to seal the deal for me and then some.
Tom