Yeah I would say - echoing the group here - that confusing design with art makes designers crazy.
When nondesigners see a great design, what strikes them is that it's really pretty. They think, the designer must have just, you know - tried to make it pretty. Gone into some art place, and just drawn it out in one minute. It looks so simple! Surely it took a minute to make.
Every good designer knows that the results was achieved by problem solving, looking at constraints, using your eyes sure but it's really about iteration, testing, culture, history, signification, hierarchy, where the eye travels etc. IT IS NOT ART. it is design;).
So, when some nondesigner doesn't like a design it turns into a pissing match over whose art is better. (whose subjective impression trumps the others -- some discussion over subjectivity, avoiding the constraints and functional matters). And the designer is sitting there saying "tell me the problem, etc. i am not a baby., this is not my subjectivity, i'm trying to solve this problem, and yes of course use my intuiton and experience make it pretty because that makes it functional. but we can't move forward with this junior-level conversation about whims and impulses"
every designer is different, but in general - don't treat us like artists. don't insult our work by calling it art. don't insult art by calling our work art (because, we all know that art is more personal and subjective and a different beast entirely). realize we work outside of our own tastes. try to get outside of your own tastes with us, and solve this thing without ego.
ok, rant over ;)