I've always seen my generations attraction to vinyl as a response to the ephemeral nature of digital music. Vinyl is orders of magnitude less convenient, but it is concrete. When I spend my $5-30 dollars, I own a physical good that I can manipulate. I think this also answers the question "Why vinyl?" - it is the most physical of all music mediums.
I think that is a strong psychological component for humans. This has only grown with subscription services, where I spend $10 every month, and don't even have a library to browse.
I've never really cared about vinyl's sound, and actually listen mostly to digital records. But as far as giving a sense of ownership and intimacy, vinyl wins.