I also think you're really underplaying how people enjoy their music collections. I hold on to records for the same reasons you hold on to books.
The next few decades will be interesting. Just like how vinyl has received an increase in popularity for many reasons, if this Kindle Unlimited type of distribution for the written word takes off like digital distribution did for music, you should fully expect hip young people in 2044 to start buying books again.
I'm guessing  you hold onto records not just because of your attachment to the physical object, but also because you get them out and play them from time-to-time. I hold onto countless books that I will almost certainly never read again.
 Yes, I'm aware that, in some people's eyes, this makes me the worst kind of philistine, but I'm a music fan, not an audiophile.
 With apologies if that's not the real reason you hold onto records :)