If you don't like deep dish pizza or object to it for health reasons (both valid opinions), a visitor asks if they should go to Lou Malnati's and your response is, "No!" the implication is that it's bad pizza when you ought to be saying something along the lines of, "I don't eat deep dish pizza" or "Not my thing." If someone likes deep dish pizza, chances are they will find Lou's delicious and a memorable Chicago experience. Just my 2¢.