a "loose" gun works in most general applications. A tight one, an inherantly more accurate one, ghets gummed up easier. Makes sense.
And .45 is an excellent stopping projectile which can hit most anywhere and still have that stopping capability. Makes sense too.
I think the military needs a "loose" sidearm more than any civilian. No ordinary non military individual reasonably expects to drop out their bedroom window into a marsh, pond, or sand field unless they're one of those hobbyists who plays like they're in one of the branches when they aren't. And those folks probably own three or four Colts already.
Would I own a Colt 1911A1? Heck yeah I would! Despite not being a sport competetion shooter I would own one and shoot that thing as often as possible.