Why do so many sellers not show the back of components...???

Need to indulge a pet peeve of mine today.

And that's sellers here on Audiogon -- or really, anywhere else -- who have photographs of the front and sides and top of a component, but not the back.

You know, the back, where nearly all inputs and outputs are. I need to see that perspective to assess if the whole unit is in the condition advertised. And I want to see that perspective because, at a glance, I can better know if any particular component will work as I wish in my music systems.

Is there some reason why it's not uncommon for sellers not to show photos of the back, input, sides?
And does that absence of back-side photos annoy you, too?
Sure, I can ask for that photo, but sometimes if I'm only partially interested, I don't bother.

Dave, who also thinks it's shortsighted of sellers not to show the back because that view can help whet the appetite of a buyer which is true for him