I watched the 1953 film version of Henry Kuttner's Twonky the other day. It's fascinating and grueling at the same time.
Sf film used to be humorous. It's evolved for the most part into thrillers (with more than a nod to horror tropes), but doesn't work unless the story actually makes some sense. The big idea, as it impacts our lives.
H. G. Wells' War of the Worlds, published in 1898, was horrific because the audience, familiar with war and tyrants, thought the story possible. Spielberg's version, like all his other sf films, grossed well but was deeply flawed. He doesn't get it. To him, science fiction is just another fairy tale. There's truth in his stories, but it's always centered in an individual's or family's growth as human beings. Where's the real sf in his films? ET as a pet? Close Encounters as UFOlogy myths? A.I. as a puppet show? War of the Worlds as a family crisis? The films are filled with intriguing ideas and gadgets, but are reduced to the little gifts under the tree. We're waiting to rip open the complete, comprehensive, completely-satisfying American Flyer train set hidden beneath all that Spielbergian tinsel-and-glitter.