Is Hollywood written for children?

It seems to get harder to suspend disbelief for movies as I get older. I don't find any movie compelling anymore. In 2000-2001 they seemed like portals to other worlds, access to a reality I didn't have in Thunder Bay. Access to the wider world. But now they just seem like reflections of the worldview of a very narrow group of Hollywood writers, and collections of various filmmaking tropes, and cynical attempts to entertain for making money, like a kind of circus, rather than some kind of special information about the world that I need to know.

So all I really watch these days is just re-watching of old TV shows that I have nostalgia for.

Is this a universal phenomenon? Is it an unspoken thing that every show, even if ostensibly written for adults, is in fact watched mostly by children and teenagers? And will only be watched by adults who are watching for nostalgia reasons?