10. It's late in the afternoon and your shadow won't get out of the way.

9. Lee Friedlander made his name that way and he's a stud.

8. Strangers can sometimes get angry when photographed, but if you get angry at yourself you can just walk away before it gets violent.

7. Good way to document your changing (or nonchanging) appearance over time.

6. Last frame on the roll.

5. Self portraiture, like any worthwhile pursuit, leaves more questions unanswered than solved. If it didn't, as with most pursuits, you'd come to the end of it eventually.

4. Proof that it's actually you making the photo and not someone else.

3. Self reflection is essential.

2. No other available models at the scene.