Meeting up to shoot is always fun, I'm at the range very often as I work there, so easy to find a time to meet.
One of my favorite range games is to shoot gongs at 100 yards with iron sighted semi auto pistols. I can usually hit about 25% and on a good day 50%. I'm sure that percentage would go up if I had some sort of scope on the pistols.
I like irons, but much of this argument sounds like something from 60 years ago.
Scopes are faster as your eye doesn't need to line up rear, front and target. I have red dots that are solar and battery powered with 7 year battery lifespan. Red dots are really fast and very accurate for anything other than shooting groups. Anything can break, including scopes and yes, I had a horse roll on a B&L scope and knock it out of zero. That was 15 years ago and no quality scope knocked out of zero on a hunting trip since. Optical sights have been proven many times as fast, accurate and durable.
Mounts can get loose so use blue locktite. Screws and adjustments on iron sights can do the same.
I like using
quality iron sights. Most factory supplied irons are not quality though. And the limiting factor always seems to be eyesight. I know I could use irons better 10 years ago than I can today. Although recently I head shot a yote at about 50 yards with a 22 short and pretty rudimentary iron sights so I'm not real blind yet.
Often, it comes down to what you use and know best. Like lots of things.