Herschend has some very solid parks. Very clean, good staff, good loading times, and a multitude of shows (at least at Dollywood and Silver Dollar City). I'm all for them vs someone like a Six Flags (who I have a season pass to, so I still go, but it is what it is) who is the opposite of all of those.
They actually operate better and more efficiently than Legoland or Busch Gardens in my experiences. If you're opposed to it via any "religious" viewpoints they have- then I'd recommend you be less close-minded. If that's not it, I'm curious what it is.