Laura Miller's reply to Edward Docx's now infamous article on the alleged inferiority of genre fiction is well worth-reading. My only quibble (well - the only I'll discuss here) is that Miller, being a "literary" reader like Docx, shares much of his outlook. They both believe that there is something like "good" and "bad" writing and that presence of the former is what separates "literature" from "trash"; where they differ is that Miller thinks it's possible to enjoy both, which is fine and dandy but doesn't go far enough in my view.
I agree with Miller that genre fans tend to over-react to such attacks, but it's due in large part to them still sticking to academic, "literary" standards of "good" and "bad" writing. If you really believe that, say, Ichiguro is the gold standard for writing, then you can't but feel vexed when someone tells you that, no, you're not Ichiguro. This is not to say that genre fiction should not thrive for literature nor that all conventional standards should be abandoned - but maybe it's time for us to develop our own and accept that they may be just as valid as those set forth by the Literati.