Some kids react poorly to things. I love movies and want the kids to enjoy the experience.

Personally, I'm pretty unflappable, although things like horror movies don't do anything for me at all. My wife cannot tolerate gross stuff at all. Criminal Minds (prime time TV fare) kills her appetite.

My son is too little to develop preferences, but my one nephew hates movies where someone pops from an off camera to attack somebody. Freaks him out, even in a not scary movie.