Here's my personal story as to why the 1911 is my favorite handgun, period.
When I was younger, 12 or so, I got to shoot my grandfathers Glock 17 and 20 (10mm) and couldn't hit squat. Same story with his various revolvers.
At 16 I got to shoot my buddy's father's Colt and Kimber 1911s and somehow, with zero instruction or practice, my pistol shooting did a 180. I could easily hit half liter water bottles at 15-25yds with ease whereas before with the Glocks or revolvers I wouldn't have had a prayer. I don't know why but I simply shoot better with 1911s, I have since become proficient with other types of handguns but I still shoot 1911s the best.
Sgt. of Marines, 5th Award Expert Rifle, 237/250
1st Award Expert Pistol, 382/400
D Co, 4th CEB, Engineers UP!! OEF 21JUN-20SEP2011