Why don't we tire of music?

Some people get tired of listening to the same music. But your question touches on the balance between feeling and thinking. Most other media you mention largely requires more thought, except maybe reruns of sitcoms or comedy movies that people do like to watch over and over.

Music allows you to commit it to memory and just enjoy how you feel because of it. This is precisely why many people call it a drug, because the experience a particular song or composition can deliver can be consistent and emotionally resonating, even euphoric, similar to alcohol or other substances.

One thing I love about music though is that sometimes over time as my listening skillls improve, or my gear improves, I end up hearing the same tracks differently. New details surface, and that excites me. 

we never get tired of listening to the same music.  Why is this?"

Speak for yourself.

There's a lifetime of unheard music in every genre.

It's defining the line of audio as a hobby/audiophoolery and actually enjoying music that gets weird in these forums.

A lot of folks repeatedly return to the same piece of art over the course of their lives.

If I was smart, I’d re-read (or…uh…actually read…🙄) all them books on my shelf.

I re-watched a few different TV series’ over the last year or so.

The entire “Twin Peaks” story was one of those (seasons 1 & 2, then the ‘92 film, then the ‘17 Showtime, “ The Return” season).  It was even more amazing the 2nd time.

I re-watch films regularly, often getting a lot more out of them with repeat viewing (every once in a while maybe getting less 😉)

Music is so much more portable and easily repeatable, I guess. Morning shower, breakfast, commute, work, commute, dinner, evening, etc. You could potentially listen to music all damn day if you wanted.