This debate has always interested me. I read a very convincing article about ten years ago, written by a man, explaining why misandry isn't a real word. He listed the etymology and history of the word and so on. He was also an excellent writer and I admire good writing. I can't find the article. I will look again for it.
In searching for it, I came across a men's rights activism forum where they're discussing a thread by the title of "Misandry is a Real Word"
news.mensactivism.org/articles/02/01/02/1631228.shtml
Personally I'm with the writer of the article, but the men's rights activism forum make a convincing argument