So what is Riffraff? An anti Luddite? One thing he definitely is, is in the minority. I don't know what type of 1911 you couldn't hit with but, you bring your Browning (which is a very nice gun, surprisingly designed by the same guy who designed the 1911) and I'll bring my 1911, and we'll have a little contest, perhaps for a dollar or two? Then, if you like, we can switch guns and do it all over again? Either you had a real dog of a .45 or the 1911 is too much gun for you personally.
I've carried a 1911 of one form or another for over 40 years, always Condition One, cocked and locked, and never had an AD. I've also hit dangerous targets with lesser calibers than the .45 and failed to drop them with solid hits. Does the term 9 mm mean anything to you? It's never happened to me with a .45.
My point is not so much to specifically defend the 1911, but to defend the position that anyone should tell someone else what defensive weapon to carry. The best firearm in the world is useless if you are not comfortable with it, and a well placed minor caliber can be very effective if properly placed.
As for the 1911 being obsolete, and being repalced by double/single action guns, most of the REAL experts I know consider the D/S Action to be an answer to a problem that doesn't exist, unless you consider the reaction of the uninformed to a cocked hammer.
The choice of a defensive weapon is about as personal as one can get. You choose what you like and keep your nose out of my choice. Otherwise you're creeping into the territory of the anti gunners.