If squirrels had threads we'd all be nuts.
Sometimes I wonder if our vocabulary is more finely grained than reality. I'm not buying the two (or n) worlds venn diagram stuff.
I can't wait to try these 45Hz test tones on my Pasiphae Uranium Horns. It's not journey or chase for its own sake or for the sake of the latest UHQR. I like to improve my system but in the limbic moment of some good Sibelius or Shostakovich, time is still. The more my system improves the greater appreciation I have for performances, conductors, and musicians. I fiddle with my vinyl front-end because I know its fine tuning improves the sound of music not some other sound. The more I do it, the better I get at it - the more I'm an audiophile the more I am a music lover. etc., v-v, ymmv.
While I get you here and largely agree that improving systems generally sharpens the music appreciation, this is definitely not the case for all people. I know a guy who changes whole systems (sometimes 2 or 3 systems) like he is changing his underwear. He must have had 100 or more different speakers and the same number of amps, preamps, dacs etc. etc. over the 15 years or so I have known him. I think in his view he wants to hear and tinker with all of it, or as big a slice of it as he possibly can, before leaving this earth. I think he barely listens to the music at all and I have never had a musical revelation at his place...he is always playing sort of standard audiophile jazzy stuff (Diana Krall for example). So for him it is the chase and then he gets bored and looks for the next conquest. He is extreme, although I think some members here can give him a run for the money.
I do both. I have a system that is now relatively fixed (Odeon La Boheme, Aries Cerat Genus, Aries Cerat Kassandra, Yamaha GT-2000 TT with Kiseki Blue or Audio Technica AT150MLX and Silvaweld phonostage) where I do my serious listening and music discovery and I have my "lab" system, which is part DIY and tunable with swappable high frequency systems (two different horns) etc. That is for speaker design and experimentation. If it ever gets fundamentally better sounding than my big rig then I would consider making IT the big rig but so far that is not a big concern.