What then is it that you're trying to achieve with imagesharing?
I'm not sure if you're addressing me here, but the answer for me is twofold:
1. I do not in general share pictures.
2. When I do the reasons are usually pretty opaque to me, but generally include an aspect of experiment "let me see if I have correctly gauged the audience reaction"
Sometimes I dare say I do it because I want the ego strokes, even though I don't much like the pictures.