Count me squarely in the camp of the cineastes. To suggest any crude dichotomy between theater and film along the lines of intellectual/unintellectual is, IMHO, total B.S. – and there’s a vast and growing body of work, both in the form of notable films and books on film theory, that puts that old cliche to rest.
Nor do I entirely accept the notion that theater is verbal (basically a thinly coded allusion to “intellectual,” I suspect) as opposed to cinema’s being visual. Clearly, both mediums embrace both of those aspects. I do think that theater’s strengths skew towards the verbal, but that’s another way of saying that its capacity for visual expressiveness and innovation are limited (which they are).
[It is telling, though, that much of the vitality of Broadway over the past quarter-century has been due to the popularity of revivals, musical revivals, and new musicals of a pointedly “spectacular” (and, it is often argued, dumbed-down) nature (e.g., Andrew Lloyd Webber). This general trend bodes ill for the future marketability of new works of traditional, “verbal” dramatic theater (in the manner of Rattigan, Pinter, Stoppard, and Shepard, for ex.)]
Cinema, on the other hand, is the more malleable medium, with a vast vocabulary of visual techniques and possibilities that are more or less unique to that medium (see below). I agree that most Hollywood movies skew “visual,” but that partially reflects the growing dependence on the international market for revenue. Movies of a more spectacular nature (think “summer blockbusters”) – are on the whole more popular and “translate” better to non-English and developing-world markets than do, say, Victorian drawing-room dramas. But that particularly post-1970 trend is more reflective of the modern global economy than of film as an art form, per se.
Now, having got my manifesto out of the way, I agree with the OP that film is simply more exciting than theater, generally speaking. Basically, it comes down to the technological array available to it (some uniquely) as an art form, which permit a vastly greater range of expression, in both communication and action:
Visual effects:
Lenses: Wide-angle, telescopic, fish-eyed, Kubrick’s fabled custom Zeiss lenses for filming candlelight; polarized lenses, shooting day-for-night; color filters…
Film treatments: B/W and various color stocks; extreme/moderate/light grain, color tints; various degrees of exposure; “retro” or nostalgic film treatments (i.e., sepia, added striations and dirt, simulating historic film and obsolete videocams, etc.); different aspect ratios; even “3-D”.
Directing & editing tricks: closeups and zooms, dolly shots, tracking shots, reaction shots, crane shots, handheld cams, Steadicams, P.O.V. shots (including not just people but objects, like bullets); jump cuts, graphic match cuts, freeze-frames, multiple frames, speeding up/slowing down/reverses/repeats; stop-action photography; wipes (many different kinds of those); dissolves (ditto); titles and title cards; [conversational] counterpoint editing, montage sequences, stream-of-consciousness montage editing…
Sound Effects (more than just a Kinks album!):
Diagetic/nondiagetic sound; Foley effects; various stereo sound technologies (Dolby, THX, etc.); various miking techniques that enable the faintest sounds to be heard; postproduction dialogue looping; multitracking…
In a play, a character might refer to a battle having taken place, and might even venture a very limited portrayal of some field action. A movie, OTOH, could take you to the theatre of operations and show you the soldiers storming the beachhead and shooting, getting shot, and drowning; a bullet’s progress; the huge, thundering explosions of the ammo dump on fire; the aerial dogfight overhead; the treads of a tank grinding a man into a pulp; the stream-of-consciousness last thoughts of a dying man, etc. etc.
You can always translate a play into film, albeit sometimes a rather dull film. (In fact, several plays of each of the four playwrights cited above have been translated into movies.) But can you imagine trying to “reverse engineer” visually innovative films like “Citizen Kane” and “Blade Runner” to the stage? What would be the point?