If they're simple folk and have never worked with imaging software of ANY kind, that's usually the thought process... They understand that pictures can go into xlsx (I've seen people paste into and send docx more often) so that's what they paste them in
@FreeMan that one could possibly be because the guy shot a movie, and just wanted to show one frame (and maybe he couldn't be arsed to walk back to wherever the DIY job was)... but still, I would always make a separate photo of the detail in that case
Yeah, I've seen those, too. I'm actually guilty of that (hangs head in shame again). My eldest doesn't check email but once every couple of weeks, but he'll respond to a text right away, so sometimes I text a picture of the screen instead of emailing a nice screen capture...