- I prefer images of people, and a 50 is the widest i feel comfortable using without distorting faces.
- I started shooting fashion, and the 'normal' lens was always the primary lens.
- You can crop and 'exclude' more easily than with a wide, toward getting more graphic imagery.
- There's the best balance of cost, size/weight, and speed.
- It's a "no trick" focal length. Telephotos distort by compressing. Wides distort by extending. A 50 doesn't seem to Do anything. It lets the scene speak for itself.