Police guitarist Andy Summers--a rock 'n' roll legend who is also a very talented and dedicated photographer--wrote in his autobiography
One Train Later about how at a point in his music career when he was getting a bit jaded, picking up a new (to him) Telecaster caused him to recall some of the joy he felt when he first started playing, and made him want to create music with it.
I've often felt--and told young photographers I was mentoring--that cameras are like guitars. You can have the fanciest, most expensive guitar in the world--but if you don't know how to play it, you won't make sweet music. Conversely, you could be handed a really crappy guitar, but if you truly know what you're doing, you can do a bit of tuning and checking it out, and shortly you'll be jamming on it.
And with cameras just as with guitars, some are easier or more fun to play, or have a nicer feel/aesthetics, or give you a sound/look/feel that you want for something particular. So you should use the camera (and process) that feels most comfortable to you, that you are inspired to create with the most, or which gives you a certain look that you want for a particular image/project. Some songs, a Tele gives you just what you want--on others, you'll want an old Martin D-28 because it's just right for the song.
So personally, I use digital whenever I'm shooting for pay/publication, shooting something that doesn't pay well and that I'm not too interested in doing anything with later, shooting action (I shoot a lot of pro boxing /MMA, shooting in low light (which I do a lot of, too), shooting something that has to be turned around quickly, (usually when) shooting color for my own use, or shooting something that is going to someone who would have no idea what to do with a film image and is only going to use it on the Web anyway.
My only digital cameras right now are DSLRs, and I don't *enjoy* using them, they're great tools but not *fun* to use. So, like a session musician, I can play whatever you need me to, and I'll shoot digital when necessary for the job, or what I need to put out, it's part of the gig.
(I'd love to try an M10, to see how I get on with that--or a Z8, as I could use film lenses with that but still shoot for pay with it...and it can do some things my DSLR can't. I'd really like to see if they're as *fun* to use as I believe they might be.)
Whenever I am shooting for fun, or for my own personal artistic projects (such as they are), I nearly always shoot film, particularly black and white film. I like the look of what I get in the darkroom with B&W film (scanning it, however, can be a damn nightmare), and I vastly enjoy using film cameras far, far more than using a DSLR. The DSLRs (and the Fuji X100s I once owned) are irritating and annoying as they always seem come between me and what is in front of me, whereas film cameras (even cheap old things like an FE) just seem to get the hell out of the way and let me focus (mentally) on what I'm shooting. I seem to be far more "in the moment" when shooting film than when shooting digital, as when shooting digital I'm paying more attention to the camera then and what it's doing (or failing to do) than feeling and noticing what's going on around me.
I'm rarely *inspired* to pick up my DSLR and try to create something with it. Whereas my film cameras cause me to want to think of things to do with them. They're much more fun and inspiring to "play". Really though, I'm convinced that it's the *camera* rather than the image capture medium I am interested in; I have an ancient digital back for my Hasselblad V bodies, and I do love to shoot with it on those cameras--but unfortunately I have to shoot it tethered, it's so old. I believe that if I had a more modern digital back to put on my Blad, I'd probably carry that around everywhere, as I love shooting the Hasselblad V cameras. Which is why I think I'd love an M10, if I had one--I'd get great digital output from it, but it would give me almost exactly the same experience when making the photos as my M6 does. And wouldn't have all those damned autofocus points, a crappy viewfinder, an insistence that it knows more about how I want to shoot something than I do.
Sorry for the rambling, this has been an interesting discussion, just wanted to kick in my 2p. Thanks if you made it this far!