Just look at the weapon's strengths. I've already mentioned the trigger, but it's worth repeating, since it is probably the number one reason why this almost century old design is still so favored. Many other guns can match the 1911s reliability and practical accuracy, but not one has as good, let alone a better trigger. Then there's ergonomics, which are unsurpassed by any other handgun; the gun points quite naturally for most shooters, and the controls are all placed ideally for rapid, positive operation, even under stress. The safety, magazine release, and slide release can all be operated by the shooting hand with great ease, and the motor skills they demand are not fine ones (certainly no finer than operating the trigger is). Thirdly, there is accuracy, of which the 1911 has more than enough. Some examples are capable of match grade accuracy (and they don't always necessarily give up too much reliability to achieve this either, though some do), but even a stock, GI 1911, that rattles like a castanet when you shake it typically has enough accuracy to put its full magazine inside an eight inch-diameter circle at 25 yards, and that's easily accurate enough for a combat pistol. Finally, there is reliability. Many, many people will sneer at the 1911 as a "design that you must spend a LOT on cash to be semi-reliable" and this is simply rubbish. It's true that there are many unreliable 1911s out there. And the thing they all have in common is that the design has been monkeyed with to varying degrees. A well made, mil-spec 1911 is still as reliable as anything you can lay your hands on.