I suppose I'm not a collector as such. My CO2 guns are because I've always been fascinated by revolvers, & the PO8, might be tempted by a Webley .455 or Mauser 'broomhandle' replica when funds permit.
Most of the others, mainly BSA/Webleys are because they are ones I wanted or had as a youngster. The exception is the modern HW35 in .177, the only rifle I've ever bought new. But I prefer the older HW in .22.
Not saying I won't get any more, I've had a hankering for a Supertarget/Club for years - but have to accept with my eyesight now it would be a 'cabinet queen' which would be a waste. Don't think the aperture sights would suit me at all.
When my health permits, I do like to shoot my oldies - there's nothing like the solid, hand made feel of them. Guess if I had a pristine, unfired example, boxed with all the original accessories I might feel differently, but I don't get the 'wrap it up & put it away thing'.