As Scott says - there are too many people who do not understand the generosity of this whole hobby & take the whole thing for granted.
In reality, negative feedback can & does destroy a designer's enthusiasm & willingness to contribute.
How would you feel if you put a lot of effort into doing a drawing & some idiot kid came up & said 'that sucks!' ? You'd be hurt - & this hobby is driven by enthusiasm & positivity & destroyed by the negative feedbackers.
Pete,
I am an artist in life. Do paintings, illustrations, sculpture, photography, etc. I have this happen all the time. Criticism whether good or bad I weigh equally, as some of the negative criticism I receive benefits me in that I strive to get better than I am now. And for all the positive critiques I get, I feel the same way.
There is a difference between knowing who is honest with a critique rather than someone who is talking out of their ###. If I read a review on my artwork where someone says "it sucks" without elaborating why they think that way, its in one ear and out the other. Now if someone says "it sucks. Your composition, and jusxtaposition is wrong, here is why I think so, and while your at it, I think it would have been better if you added this color or that color" with indepth ideas behind the post, I would read it in earnest and consider the critique in a favorable light.