Horn based loudspeakers why the controversy?


As just another way to build a loudspeaker system why such disputes in forums when horns are mentioned?    They can solve many issues that plague standard designs but with all things have there own.  So why such hate?  As a loudspeaker designer I work with and can appreciate all transducer and loudspeaker types and I understand that we all have different needs budgets experiences tastes biases.  But if you dare suggest horns so many have a problem with that suggestion..why?
johnk
I'll bet half their problem is their website. Go there and try to find a dealer stocking a pair of Heresy. In my area I get every ABC Warehouse, Best Buy, and a few electronics shops I've never heard of. You can be sure Best Buy and ABC Warehouse aren't stocking heritage gear and their website makes no distinction. I wouldn't know where to hear a good pair of Klipsch without calling shops for 15 minutes. That's a problem. 
I get the impression from the glowing adoration of horns by some here that their significant shortcomings are being ignored
I can speak for myself in that such is certainly not the case. Horns can sound as good or as bad as anything else.
I just ordered a pair of Klipsch Heresy lll......  a complete 180 for me but i'm looking for a sensitive speaker that is tube friendly.  Currently have a pair of Quicksilver Mid Monos, that I 'll never sell.... but I'd like to try building something like a bottlehead amp.   
Audio Visual Therapy in Nashua NH is the only Heritage dealer near me. They had Heresy Capitol and Forte lll on display.   Great guys up there , no tax.....  They have a lot of great speakers on display and the best headphone room I've ever seen