For you, maybe they're not! Me, I value bits more than the artifacts that carry them. My MP3s are worth far more to me than the CDs I ripped them from; the CDs invariably got scratched or lost, and I was lugging around huge books full of them. Once iTMS came around, I virtually stopped buying them altogether.
I'm not going to argue that there aren't people who value archival formats. There clearly are.
However, it's not the job of a pricing scheme to ensure that everyone buys your product. Almost the sole job of a pricing scheme is to maximize the revenue stream commanded by the product. Literally the first step in designing a pricing scheme is to study the market, segment it by perceived value, and then price the product to attract the largest (Buyer x Price).
So, I humbly suggest: irrational attachment to physical objects as carriers of bits aside, for most people (not you, but most), the value of pure digital forms dwarfs the archival value of ink.