Now that I've gone to a handful of movies in US theaters, I figured that I am qualified to make this thread and ask a very important question as a direct result from yet another poor roleplay ("I am groot", ho ho 2funny4me).

Why are Americans so loud during movies? I thought that the Americlap thing was nothing but a petty joke at first, but this is actually true. People cheering and clapping throughout the movie making so much noise that you actually miss parts of what's being said. There's not much of a point of showing 3 PSA messages at the start telling people to turn of their mobile phones when there's people making noise throughout the entire movie anyways.

It also seems that a lot of American moviegoers are very easily entertained. I recently saw Guardians of the Galaxy (watchable movie if you don't put much thought into it and ignore how predictable and cliché it really is, but that's just Marvel movies for ya) and this scene had people go wild. Like, not just a few drunk guys finding it a little too funny, but easily half the audience was laughing their asses off as if it was the single most hilarious thing to ever grace this world while I was sitting there in disbelief.

Explain this behavior, for it is very different from the typical theater experience in Europe.