I self-limit to 300 yards.
At first, my rifle did the limiting for me. I started out hunting the wide open spaces of the wide open west with Marlin 336 in .30-30 as an 11 year old kid in 1976. It didn't stop me from filling my tag, but it did mean that I couldn't hunt the same ground that my dad and most of my uncles hunted the same way they did.
Most of the deer I shot in my first 7 seasons were under 50 yards away when I shot them.
My dad, on the other hand, used a scope-sighted .30-'06 and he had no problem pulling the trigger out to 660 yards. The only problem I had with that was that helping him find his downed deer was something of a time-consuming ordeal at times. It is a lot easier to recover a mule deer shot at 30 yards than it is to recover one shot at 660.
So, the recovery aspect is a part of it, for me.
Also, I started shooting "Service Rifle" matches back in the old Director of Civilian Marksmanship (DCM) days. Part of the National Match course of fire is slow-fire prone at 600 yards. I still shoot "Service Rifle" under Civilian Marksmanship Program (CMP) rules today. I know exactly how incapable I am of doping wind correctly on every shot I make from the 600 yard line.
The longest shot I ever made on a game animal in a sport hunting situation was a 278 yard broadside poke at a California high desert mule deer. That was in 1992. My longest shot on elk was on my 20th and last one. That was 178 yards. My longest pronghorn shot was 256 yards, and that's the only one I've shot farter than 150 yards away.
To me, it is a choice I make and not one that makes me morally superior. I don't think my dad ever shot a deer at less than 400 yards. He was a "one-shot killer" and not a wound inflictor. I'm NOT against people making different choices and not "anti-long range hunting" at all. I wouldn't be comfortable hunting like that, but my dad told me, a few years after he stopped hunting for health reasons, that inside of 300 yards, he'd be a "buck fever basket case" and for him, shooting past 300 was easier and distance meant he had time to plan his shot so it would be effective.