The first music to lose its lustre as a whole for me was high speed hardcore circa 83-85. Hardcore had blown me away in 82. By 85 it was making me yawn. Not the great twisted bands (Headcleaners, Wretched, Negazione, CCM, White Cross, Mecht Mensch etc.) but the slew of international 3rd rate dreck that equated speed with intensity. I sold/gave away tonnes of records or taped over compilation cassettes I'd briefly adored, ironically often worth silly money now - Bastards, Kaaos, Zyklome A, Moral Demolition, Arroganta Agitatorer, Inferno, Electro Hippies, Generic (oh the irony), Intense Degree, Svart Framtid, Vorkriegsjugend, Christ On Parade (great live - dull on vinyl), Final Conflict, Doomsday Massacre, Kansan Uutiset, etc etc yawn yawn.
I kept the killers (Agent Orange, BGK, Olho Seco early Social Unrest etc) but the generic dross was so tedious regardless of whatever revisionist dewy-eyed collectors view prevails today....
Lou Reed - Transformer. "Welcome to my record shop. Oh you're a student? It's 1985 so it's compulsory to own this LP. That'll be 5.99 please". To me this record lost is lustre very quickly as did Berlin and the other Reed LPs of this era. I find it extraordinarily dull and lacking in charm. I may have over listened (though not that much to be honest) but I can't bear to hear it these days. Much like any JJ Cale and Van Morrison LPs - which I never liked in the first place.
Post-hardcore Husker Du hasn't lasted too well though I like Moulds post Husker work.
I have fallen out of love with surprisingly little music over the years. This suggests to me that I have exceptional taste. And certainly more than you losers.