CYLINDER MACHINING QUESTION

I know I'm going to get flamed here.
To do a "proper" job, mosta all of above is correct.
Experience has shown me after being taught at school, been mentored and having performed by myself and misc employees, that an "over the fender" overhaul with a hand held 3 stone hone, on dozens and dozens of engines, then service those engines for decades more, and have few problems, that THEN need expensive removal and machining.
It was common "back in the day" for a valve grind at 80,000ish miles, and a re-ring at 120,000ish miles, around the world .
Flame on . .