Just one? Slacker!
I love the 1911, and shoot mine (I have several, mostly Springfields) better than pretty much every other type of pistol I own. They are a bit heavier, but I am more comfortable with the ergonomics of the single stack and the weight makes them easier to shoot.
That said, the 1911 is why I carry a XD(M) Competition Series .45; the dimensions (minus width) are pretty much the same as a 1911 and overall it's lighter, but the selling factor is 13 round magazines (plus one in the chamber and an extra mag on me somewhere). Are 27 rounds of .45 ACP enough? I hope so, and I'd rather have and not need than the other way around.
So I end up with about 12 more rounds with a pistol that is pretty much the same dimensions and somewhat lighter than a 1911. It's ain't nearly as pretty, but that's a burden I'll just have to bare...
Cheers! M2