I am currently a member and elected webmaster in an art club. On that day, we are gonna try drawing Cara Delevigne. And my seatmate shown me her chibi drawings and anime characters, and after that, I asked her to ink the drawing and she did. After doing the inking, she said, "It's awful isn't it?"
Another story is also a clubmate, he called himself a "failure" artist, even though I see his sketches very fascinating, I told him "No, you're not!", then he replyed, " Nah!"
And I also see other artists I encounter that really hate their own work even if I see it good.
I myself hate my work as well, my parents and siblings look forward to my drawings, but I'm too shy to show it to them since I hate it so much... Well of course, I drew a realistic drawing for once, then my mum said, "Wow! You're good at this!" Then I replyed, "No mum, it looks kinda weird."