Like Oldprof I have used slides in teaching for many years, and I do fieldwork that usually involves shooting 1000-1200 each summer. But I am making the transition to Powerpoint for teaching now, and will take a digital camera this summer (along with less film than usual). I have always liked slides because, as long as you use fine grain film, and good lenses, you can economically shoot a huge number of high-quality images that take little space to store and are relatively easy to sort. I know digital files are even easier to sort and search for if named and indexed, but you have to be more systematic in your cataloging.
I also agree that slide shows of family photos are fun, and large, transmitted light photos have a special effect missing from small prints.
For the last few years I have really enjoyed shooting Provia 100 F in a Leica with a coated Summitar, and I'll keep doing that as long as the film is available and not overly expensive.