Johnny asked a LOT of questions to kick off this thread. For me, then-current music began to lose its luster around 1991. I was 27 at the time. It was the year of grunge, and Soundscan took over Billboard, causing mediocre songs to stay seemingly forever at #1.
But my tastes began to run a bit more AC as early as 1983, the year of "*** On Feel the Noize" by Quiet Riot. There had certainly been songs that I had disliked before then, but suddenly, Quiet Riot made me feel "old" at the ripe old age of 19. Granted, their music (if we could even call it that) probably appealed to kids younger than me, as evidenced by the fact that my sister (14 at the time, I think) used to play the crap out of that song, just to annoy me! I never really cared for any of the hair band stuff of the mid-to-late '80s, but then again, I always assumed that it was aimed at the teens, anyway.
Of all the songs popping up on 1983 CHR stations that would turn off a listener who liked earlier styles, you pick a remake of a 1973 British smash by Slade. Strange! I'd have thought the British sounds of the early '70s were what you'd cut your musical eye teeth on. What WERE you listening to before CHR went all to hell? I was 28 in 1983 and I thought "Come (to avoid the stupid censorship ***'s) On Feel the Noize" was a breath of retro fresh air amid all the Men at Work/Eurhythmics/Phil Collins stuff on CHR back then. It was straight-ahead Top 40 rock with not a bit of bitter-old-man attitude like "Old Time Rock and Roll." I can't understand how that song would send you running off to AC and not "I Ran" or "Sunglasses at Night."