I feel like I need to remind everyone that sometimes you just like movies because you like them, not because of some inherently definable quality that everyone else must be a fucking idiot not to recognize.
Well, there are such things as writing, acting, directing, editing, special effects, etc., all of which can be judged and defined. To say otherwise is ludicrous. I mean, I agree with you to an extent that sometimes people just like things regardless of these flaws, but the fact is that these things can be argued and they can actually change minds about cinematic quality. Plus, if people unapologetically like things that are bad, it's usually the case that they acknowledge its flaws but like it anyway, as opposed to not seeing the flaws at all. Case in point, loads of people like The Dark Knight Rises (including me, though my opinion of it has diminished considerably since I saw it), and that's perfectly fine, but at the same time you'd have to be fucking dumb to try and deny that it had issues with its script/storyline. And yes, I'll admit that sometimes there are movies which I enjoy/dislike even while not being able to put into words why I had that reaction, but this doesn't mean that I think there are certain qualities to it which can't be judged at all. In fact, seeing other people bash movies for their flaws allows you to gauge your own reaction and to better work out exactly why you enjoyed/disliked them in the first place.
I don't want to get into a massive debate about Spielberg, but essentially I agree with vonFiedler that pretty much every film is designed to have an emotional reaction on its viewers, so blasting Spielberg for being one of the few filmmakers to embrace emotional honesty fullheartedly in his films seems weirdly vindictive and selective imo. People tend to be incredibly selective with this criticism anyway; I've never heard anyone criticise, say, Grave of the Fireflies, or Tokyo Story, for actively trying to make you sad, but when Spielberg does it suddenly people hate having their emotions pushed on. Also, to say that Spielberg hasn't made a great film since Jaws (his most overrated film imo, but that's neither here nor there) is a massive generalisation whichever way you cut it, seeing as how he's made literally 25 films since then. Are you telling me you've actually seen and disliked all of them? How anyone could dislike E.T. or Raiders is beyond me, even if I will concede that some of my personal favourites of his (Empire of the Sun, A.I.) are somewhat divisive.
EDIT: just to add something on topic, I think this is the most interesting Oscars race in a while, since it's the first time since 2007 and the No Country for Old Men/There Will Be Blood contest where the best picture winner hasn't been fairly obvious weeks beforehand (I'll grant that Hurt Locker wasn't entirely obvious either, but it wasn't exactly surprising). Lincoln may be the favourite but it's by no means a lock; Argo winning the GG has also thrown a spanner in the works somewhat.