Variety has many variations.
My variety in vintage was by country - limited to 1 from each major 'Euro' (what is GB these days?) cycling country. Italy got the pass for more. A few are still missing.
My variety in 'modern' bikes - those with brifters and 10spd - ran more to frame material, hence CF, Ti, new lugged steel.
edit: this thread needs pics:
The 70s above, the 80s below. Good variety in color!
Along the way variety has been in
frame sizes = 58 - 63cm,
cockpit = saddle/handlebar/stem/hoods/pedals
But variety in scenery and terrain is great. Almost always have a bike when away on trips.
Cycling is a big universe - room for many variations.
Even disc brakes and tubeless tires and carbon forks and ebikes and recumbents and......,
