I went from film to digital (FM2 to D40, then D90). Still prefer film, but use digital for when I definitely must get the shot (paid assignments, school assignments etc.)
If you go for a cropped body, there's the whole thing about using cropped lenses that won't work with your film camera etc. etc. that you have to be aware of, especially for zoom lenses.
If you go full frame, FX zoom lenses will break the bank (for most people). They are also big and heavy.