Tech now and in the future will eliminate any differences...if there is a need. Film is a unique recording device, but its results are no long unique. Film seems to a simpler more direct way of producing an image, but it is not. There just has been a century or so of experimenting and refining already done for film users, and that experience is being folded into digital. This is not a singular exception -- but a characteristic of photography today.
We are fortunate that the light-recording properties of most materials we use can be tweaked to have similar responses to light, so that we can control the transfer of information captured with film (negative or transparency) to other medium (silver gelatin paper, platinum prints, etc). The response curve of film can easily be replicated digitally, and is done everyday with the use of digital negatives in alternative (and silver gelatin) printing.
So the only unique characteristic of film that digital cannot share, is that generally a lot of water is involved along the way to making a print.
That said, I have no interest in making digital art, but fortunately live in an area with lots of water. Tools shape one's work as much as the user of the tool does. I choose the tools that best fits my vision and needs to express it...and have fun along the way.