Mom comes out, asks to give it a try. She points the pistol without sighting, empties the 8-round magazine, and only misses two.
Louis L'Amour always stated that you aim by pointing your finger.
It is a controversy to this day, but the shots who win the "practical" shooting matches all use the sights, and have practiced so much that aiming is a conditioned reflex.
Pistols are much harder to shoot well than rifles or shotguns. The reason that so many people are lousy pistol shots is because of bad habits or lack of any training.