There are several things about digital that either do not appeal to me or dont interest me. You asked for serious thought on this so here it is. A little long, but I thought about it a lot.
1) Work flow
After shooting, I find the work flow of digital to be extremely tedious. I found myself spending more time sitting at a computer than I had anticipated, and I dont enjoy that kind of work (having done it for far too long). I much prefer the varied physical and mental tasks of darkroom work, and the ambience of the darkroom itself. I find digital work to be very oppressive and narrow. All technologies dictate to some extent how they are to be used, but this is even more the case with digital. When a digital tool doesn't work, it doesn't work. Period. There are almost never any "workarounds," unlike the analogue and tactile world in which substitutions and alternate strategies are as numerous as the imaginations tackling the problem.
One is also required to become a database manager, more or less, in order to manage the images. Some people like doing this, some dont. I am of the latter category. Yes, of course, one has always had to manage images, but storing negatives and prints is, in my opinion, infinitely less tedious than managing the same volume with digital tools (and with most digital photographers, a LOT larger volume).
2) Immaturity of the technology
While the software for digital imaging is powerful and has many wonderful advantages (one can conquer dust!), it is needlessly and I would say hopelessly complex. Keep in mind that this opinion comes from someone who has worked for 30 years with computer technology, at a very advanced level on occasion, and not some old fart who hates that new-fangled web thingie.
The most serious problem with the software is what some folks in the area of human-technology interface have called thick slicing. There are simply too many options and this is the result of a developing techology in which competing firms believe that the more one stuffs into a package, the more attractive it is to consumers. MS Word is the classic example, but PS is almost as bad. The part of PS that photographers require is but a fraction of that pig of a piece of software. There have been advancements and such packages as Lightzone are much more trimmed down. But in general, moving into digital means that one will be required to read and digest very large manuals with information that is almost exclusively proprietary, i.e., it applies to that software and that software only; one can not generalize from it. On the other hand, darkroom technology is extremely mature and the knowledge gained from one tool is almost always applicable to another similar tool. As a simple empirical test, take any "how to" darkroom book of 20 years ago and compare it with the average software manual or online help function of today. The former will likely weigh in at a maximum of 150 pages, whereas the latter will be at least triple that with page after page after page of screen shots.
3) Rate of Change
Once one changes to digital, one is committed to constant and relatively rapid technological change. There is no way around this. What you buy now will be have to be replaced eventually, both hardware and software, and if you want to keep a competitive edge, this will be sooner than later. My enlargers and lenses will serve me for a very long time.
Most of what I say will have resonances with photographers who were serious, working professionals even before digitial, i.e., technological change for competitive advantage, proprietary information, complex documentation, but digital has accelerated this to a breath-taking pace. I should add that if I were a working professional, I would shoot digital, no question. However, I am an amateur, and interested in fine art photography (and I dont mean that in a snooty way). Thus I have the luxury of being able to continue with silver-based materials as long as they are available.
I post this as food for thought, and not to piss anyone off. I realize that this debate gets most people heated up, but I don't feel that way. I often go shooting with friends who use DSLRs while I lug around my 4x5 or 8x10. We are still friends, so let's keep it that way in this thread.