I try to be realistic about my quilts, and only if I pay attention to what I do and don't like about it, can I make improvments and changes for the next one.
I do the same thing with my baking - I want honest answers to "what do you think?" because I'm not asking to get a "feel good" answer, I want a real answer so I can make adjustments.
I feel that if someone asks for opinions, we should give honest ones. If someone just shows a picture to share and does not ask for opinions, then I'll keep them to myself.