There's some reasons for that though. I don't think that it's just because people here ignore more recent songs. I think it's because those are the decades that changed the entire world -- and music was a big catalyst. Also, that was the generation that changed the world - there were about 75 million baby boomers born between about 1944 and 1969. ( A generation is usually described as being about every 25 years or so).
In sociological terms of looking at radio as a medium, teens were not regarded as being a separate market of listeners until about the mid-50's when they were seen as having their own purchasing power in a burgeoning economy. They were coming into their own as being consumers - of music, fashion, films, etc.
The music is highly rhythmic - so it's danceable -- with a simple chord structure in major keys, so it is very tuneful and melodic. Rock is a mix of country, gospel, and blues - the melody stays in one's head, which prompts the listener to want to go buy the record.
By the way, I noticed that you are posting country music songs from the 50's and 60's on the Song Game thread. I can see that you know a lot about music and could post songs from any era -- but you're posting Jim Reeves songs- and that Nashville sound with the orchestrations in the background - is classic country. So, even though it might get tiresome, you're still a listener, one might surmise. And I see you as very much a music connoisseur.