It's not an age thing, although there are likely a lot fewer of the 'younger crowd' that are likely to have a shop, let alone be serious about one. What it really boils down to is what people are interested in doing to and with their shops.
As a couple guys pointed out, they're pure business...if it has nothing to do with wrenching/welding/woodworking or whatever they actually do in the shop, they're not interested.
Others are more into the showroom garages, and don't do much more than light tuneups, but are interested in having the vintage pumps, pop machines and so forth that give the shop a 'comfy' feel where the guys can get together for a beer on Saturday afternoon, or whatever.
Some of us fit somewhere inbetween...I intend to do some serious work in my shop, but I don't think it needs to be totally utilitarian - I'll have knickknacks on the walls, I'm looking for a Coke machine similar to that pepsi machine you've got, and wouldn't mind an old gas pump either.
As for replies, or a lack thereof to your post...give it some time. Yeah, 100 views, not necessarily all unique views, but we've got hundreds/thousands of regulars on the site...not all of whom logged in today or had anything to say in regards to your finds.