Is there any other logical reason? C2/3 carry does not, in anyway make the pistol a more efficient defensive/offensive weapon. C1 does.
Supernaut; let me try.
Reaper. Super's comment about "TRUST" was aimed at forcing the 1911A1 owner to make a choice. The choice is:
"Do I trust the gun MORE than I trust MYSELF"
In other words, if you don't believe in Condition-2, then it's because you DON'T trust yourself. And you'd RATHER TRUST your gun, by keeping it in Condition-1.
In other words, you, Reaper, trust your gun MORE than you trust yourself.
That is indeed a paradox that one must contemplate. If you can't trust yourself, above all other things in life around you, then why would you even think about owning a gun? You might believe that you, the human, the gun handler, could possibly have an "ACCIDENT" while putting the 1911A1 into Condition-2. But for some reason, you believe that the process of going to condition-1, and the gun itself, is actually safer than the human.
This brings a new light to the old adage of "Guns Don't Kill People, People Kill People". So maybe, our 1911A1's have gotten so good, that if a scenario comes up where we want to use the gun to shoot something or someone, the gun won't ALLOW it. That's because the gun is more trustworthy than the shooter.
Me personally; I trust ME more than I trust a piece of mechanics made up of springs and metal. I'll stick with condition-2. Or more than likely, I stick with my double action Sig P220 so I get the best of all worlds.