Well I agree with you all. However, I feel digital does not become obsolete that fast, unless you believe all the hype. There are many 18bit and 20bit designs that still hold there own today if subjected to a blind listen. Wanting the latest technology in peoples minds probably causes the constant upgrading more than what is really necessary.
Vinyl is no different. Once you go beyond the classic looks and designs of the Rega, Lynn and other classic turntables; those sci-fi looking turntable designs that cost mega-thousands quickly lose their appeal and value as the "new look" comes out. Also, each time a new version of a big buck cartridge comes out, the old version loses value the same as digital, even though there is really nothing wrong with it.
But no matter; I enjoy both formats very much.