(Emphasis mine)
That is where this argument fails. 60's and 70's music is great to those who lived the era when those songs were "currents". It is far less relevant to someone born in the 70's who grew up on 80's and 90's songs. Or someone born in the 90's who grew up on 00's and 10's songs.
It's not an argument. It's an opinion.
Each generation has their music. And many, born further in the past, also accept and enjoy the music of subsequent decades and eras. But, to most of us, the music of prior generations is not appealing (unless you look at timeless music like classical and some jazz); it was "our parent's music".
My parents listened primarily to Swing and some Classical. I've got some favs from those era's but I am not turned off just because it was "my parent's music". Music has to stand on its own and not because someone else liked it or its popularity on a radio station or chart. You would probably be surprised at the number of One Hit Wonders I have in my library.
I grew up on Buddy Holly and the Four Seasons. There are some songs from that era I still like to hear... but most are tiring and, just, old. I loved a lot of the 70's, including the Bee Gees and even Manilow. I don't want to hear "Born to be Alive" or "YMCA" any more. 80's the same... lots of great songs from Michael, Police, Madonna, Dire Straits, REO Speedwagon. Some are still very listenable.
We are not that different in age but we are very different in music taste (your oldies taste, not the Latin type). Today's pop music is more about personalities and their videos and not genre or diversity (yes, that modern definition going back to the 50's). My definition consists of a wide variety of music and not just the warbling of some over-cosmetically applied singer with weird hair singing songs that sound virtually alike.
But my point is that each decade and every year seems to have plenty of songs that are just as good as a year ago and a decade ago and two decades ago and...
On this we will never agree. I will say that anything put on pop radio in any decade will become the goto music of that generation but that does not make it the best ever. I have often said this generation has the technology to create some very good music but they have failed miserably.
It's a lot more fun not to be stuck in an era. That means ever time I hear the radio playing a current based station (or ask Alexa to spin some songs), I can be surprised with something new to add to my repertoire.
I am not stuck in one era. I am stuck in many. Doo Wop, Be Bop, Beach, Protest, Folk and Folk Rock, <some> Disco, <very little> Jazz, Instrumental, <some> Country (and more Classic Country), and some Swing (the best dance music ever although these bones are way too old for that kind of dancing). About the only music I tend to like after the mid-80's is some New Age.
I think that is enough variety for one old soul.