You think not being a Hemingway fan makes some one stupid? However, I will retract the "sucks" description. Some of his writings do not suck but they are pedestrian and lack beauty and depth. He may have been a good reporter.
My literary tastes do not run to the commonplace nor do I pretend to appreciate something even if everyone else does.
In the pantheon of American writers Hemingway is far from the top. Read Faulkner, even Steinbeck, Melville, Dos Passos, Bellow, Robert Penn Warren, Wolfe their writings are all far more interesting and much superior to Hemingway.
I've read all of the above and agree they are each indeed fabulous, Dos Passos' USA among my favorites. I suggest, however, that some of Hemingway's writings, though on the surface appearing pedestrian, are so stylistically superior they almost mock everything else in comparison (F.Scott Fitzgerald and Faulkner not withstanding). I speak specifically of "The Killers," one of the most brilliant pieces ever written.