There are a few very good answers here that hit the nail on the head!
Art Critics: are necessary and are welcome if the person doing the "critic" in a magazine say, or on TV, radio etc. is really competent and the critic is not judgmental but constructive.
Art Critique: is also welcome because I can learn a lot from critique of others. But for me the critique must come, also in this case, from a competent person and must be reasonable, like in Alabama's story. Given like that, I can take it, or leave it.
My husband is criticizing my works often, and often you can see steam coming out of my ears while listening to him with folded arms and a tapping foot , but it always is helpful in the end. But I agree, it isn't easy to take critique.