Going with film is very romantic.
Reality, more expenditure.
Sure it's expensive.
So if it works what else would do it for you?
While film may be viewed as more romantic, in many circumstances, it's far more practical.
Film may seem more expensive but the equity tied in an M9 is an incredible amount of money, especially if one has a film camera that works already.
Here in the Philly, the cost of an M9 is equal to 778 rolls of Tri-X with professional development at Philly Photographics. That's 28,000 images. Most folks don't shoot an insane amount of images like professionals do so the choice of the M9 has to be one of desire, not because it's cheaper. The camera would pay for itself in three to four years of savings against the film use. Then there's the computer, software, long-term storage, SD cards, battery replacement. All those things add up to both monetary and opportunity cost. By the time the average Leica shooter had their M9 start to save them over film images, the MM and ME were being released to the market. If you take a used M9 from a dealer then you're still in it for upwards of 20,000 frames before it becomes cost effective with respect to the camera alone.
I got my M9 on the student discount so I only had to shoot about 21,000 frames to begin to see my savings but I never got close to that figure. I reached about 7500 frames over the ten months of actual use (ten months the camera was at Leica for repair.) Add to that the 4TB of storage I built in a tower server, several 1TB external drives, eight or so 2 and 4GB SD cards and I was back up to the cost of a brand new M9 sans discount. I didn't even pay for software either because I'm an open source user, choosing to do all my work on programs ported to Linux such as UFRAW, GIMP and Darktable.
That all added up makes my beat up old Leica M4 and Nikon LS4000 scanner seem almost free in comparison. Between the camera, 50mm Summicron and the scanner, the total outlay was $1800. They paid for themselves about nine years ago.
These days my digital is a D3 with a set of AiS lenses that have paid for themselves in the space of ten months. I don't shoot a ton of frames but I can. When I'm shooting a sports match, I'll shoot far more than usual but most of the time I'm shooting very conservatively because I hate editing. it slows me down and keeps me indoors.
When it worked well, I loved my M9 (I despised it and Leica when it wasn't working) so I'm only playing the film devil's advocate because of the life situation that the OP is in.
Phil Forrest