Norm: based on what you've said, I'll guess that you don't have to sell photos to support yourself. In this context, that's ideal because it means that you needn't worry about pleasing anyone but yourself. The best advice I can offer is to do the reseach. IF you can come up with a set of digital tools that give you what you need to enjoy your work, go for it. In the future, film and its associated supplies and equipment will only get harder to obtain and digital tools will only improve. As others have mentioned, digital has some inherent capabilities (such as instantaneous feedback) that make it easier to progress artistically.
That said, if you can't find and afford a setup that you find satisfying, I wouldn't change what you're doing. All other factors aside, you have to be happy with the end product. Film is not going to vanish overnight.