Dave, thanks for starting this thread and to all those who have added their thoughts and experiences, many of which resonate with what I've done up to this point.
My first choice getting seriously into photography was to go with range finders and digital. Best decision I could have made as is discussed on this forum often.
I learned a lot from the feed back provided by digital, and by then was mostly shooting monochrome. When considering a backup camera it made sense for me with my complement of lenses to get a film camera and shoot B&W.
Along came the MP and day by day the M8 saw more and more of the shelf. It just "feels" better shooting a film camera and I'm getting better shots. Now I have your M2 and when using a 50mm lens it almost always finds itself on the M2, I've learned first hand what others mean in their praise of it.
I'll have an M3 in my hands in a couple of more weeks, poor M8.
I now develop my own film and scan it and am not bothered by that process in fact I rather enjoy it. I imagine it like what a stamp collector must feel when spending time with his collection.
When I want to shoot color I have been using digital, however now that I've seen the results from Keith's developing his own color film I'm going to give that a go.
I haven't said anything bad about digital and don't intend to, I did learn a lot with it. It is just that my experience is richer with film and film cameras.