Some people have trouble following plot. Some people excuse themselves to use the bathroom. Some people have trouble catching all the dialog. Some people close their eyes during the scary parts. Different elements call up totally different associations in different people's brains. If you watch a movie a first time and then a second time, they're different movies. So I'm OK with watching a different movie, same as everybody else.
Often, when there's a really powerful scene, I'll rewatch it two or three times before continuing, too. Because there's more richness than I can capture with just one viewing, and I want to feel like I experience it fully before moving on. So that makes it a different movie too. I'm not going to let someone else dictate my experience.