Lots of opinions from people here who don't make the decisions as to WHY.
For indie filmmakers, it's about cost of production. For established filmmakers, it's a matter of shooting what they're familiar with (which is why the Alexa is popular...it operates like film Arriflex cameras). Some directors like the visceral feel of film, and their name can command their method of choice. When it comes to financing production, big companies manage by bottom lines. ALL films for distribution from major studios end up digital...they are either shot with chipped cameras, or each frame is scanned and digitized for DI--digital intermediate--because in either case they get color-timed, and edited on computers (nobody edits raw film anymore). Then, they get output to either film for release, or SSDs for digital projection.
Digital acquisition takes the enormous costs of film stock, processing, and scanning/digitizing out of the equation. The bean counters love that, the stock goes up, executives get their bonuses, etc.
Many digitally-acquired features add film grain to give the same organic look that our eyes are accustomed to...the same reason many of us add grain to our still images (I do, unapologetically).
And...some big-names shoot film for Hollywood "street cred." Believe it or not, people in Hollywood care a LOT about being seen as artists, and using an "old-school" method for their picture can mean something to some people.
This is all trickle-up and trickle-down economy. I'd be shooting film happily all day long if my personal budget would allow for it...but it doesn't, so I generally shoot digital (production). My film ends up being scanned anyway, in order to edit/color correct/share (digital distribution). The occasional image gets printed onto *gasp* paper, but it's printed digitally (I haven't wet-printed in about 18 months). I add grain so it "looks" like a photo to me.
I don't mean to rant, but those of us here on RFF get caught up in the technical minutae as usual...but it's all about the story, as they say. If it's a good movie, it's a good movie. Usually about sixty seconds into a good movie I stop looking at the focal length, pace of editing, and color, and start thinking about the characters.