Dan - if people have a reference for what they think analog sounds like (years living with a TT, R2R, etc.), than they know the organic nature of analog sounds.
Aah, organic sound, "fluidity". I get the argument, but I think it is misplaced. Often when I go to concerts of live unamplified music, I don't find it particularly "fluid" sounding (in some venues, yes). That's the problem with the whole analog vs. digital debate: it never had (unamplified) live music, i.e., the real thing, as reference. The debate should have been: analog vs. digital vs. live music. But it wasn't.
In the absence of a reliable arbiter, live unamplified music, it all comes down to plain preference, which is not a very useful basis for a) a discussion, b) informing one's tastes of reproduction.
I also hear complaints about the hardness and bite of digital, particularly PCM digital. Well, live music often does sound hard, especially the brass. Audiophiles have long complained about digital harshness, yet while this is an electronic artifact and should have no place in reproduction, they have often overlooked that, in the absence of this artifact, great digital replay is very strong in its ability to reproduce the natural hardness of (unamplified) live music. Rather, they complain about the 'hard' sound. I got news for you: real music often does sound hard. Great PCM digital just happens to do it justice.
Curiously, the better vinyl replay gets, the better it also is able to reproduce natural hardness and bite, at least on high-quality pressings (the 'smooth' sound of less than top analog is actually a deficiency to my ears).
What I find most interesting is in speaking with younger audiophiles who frankly, did not grow up with R2R's and TT's. Their foundation for sound is rooted in some other sonic characteristic. For example, I have sent many "analog" sounding DAC's (Lampi, Lumin A1, etc.) to some younger audiophiles to demo and their feedback is usually, "yuck, sounds mushy", "why is the bass so flabby?" or "why is the top end is so rolled off?"
Again, without live unamplified music as reference, those discussions are somewhat meaningless. Hint: the R2R and TT guys aren't always right either.
I do, however, agree that digital often is less able than analog to reproduce the natural richness of sound. Saxophone reproduction is a particular offender. Analog has few problems with that, while digital often is lacking (mine too). However, it can be done: the newer dCS gear (Rossini, Vivaldi) is spectacular with tenor and baritone sax on the right recordings -- even from Redbook CD. From the dCS Vivaldi I also have heard the best triangle sound I have ever experienced from sound reproduction -- again, on Redbook CD (actually, it was a Reference Recordings HDCD, but the Vivaldi, lacking the decoding, played it back as Redbook CD). Wasn't Redbook CD supposed to have problems with the resolution of high frequencies?