I kinda ride it all, except the last few years innovations = no electronic shift or roadie discs yet, or hidden in seattube motor assist. Friction 5/6 to 10sp cassettes; Racer to touring; R531, SL/SLX, Oria, Ishiwata, Tange, carbon & titanium, currently no Al; even some off trail, non-technical.
Dark side? It will all become vintage soon enough.
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Vintage, modern, e-road. It is a big cycling universe.