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?
128x128johnk
Post removed 
I listened to the LaScala's at CAF.  On the day in that room their spectral balance seemed a little tipped up to me, and overall they didn't sound quite as warm as I, personally, like in a sonic presentation.  I gather there are a number of professional and DIY after-market mods that can have quite an impact on this, though.