Agreed: I usually compose a shot with everybody but me in it, stand until a passer-by walks nearby so they'd end up in roughly the same spot. It's not the same and composition is usually off, but they are passable for what I want them to be (full family photos, usually).

Sometimes you get a stranger looking through a viewfinder and crouching and you know you've got yourself another hobbyist (or pro) as well :) Those compositions usually are better too!

> Sometimes you get a stranger looking through a viewfinder

This happened the last time I gave my camera to someone and I was smacking myself, as I'd put the camera into "LCD screen is viewfinder mode", since then it is closer to a phone for most people. And I'd found someone who knew what a viewfinder was! Of course, it's just black. (The mirror being in the way.)