I mostly agree, but, but...
Ms AU and I get bored with music easily and have veered away to music that is challenging and refreshing. We can't listen to songs that were our old favourites anymore. Surely that's not just us?
No, not just you.
We do very little 'old stuff' tbh. Me 67 and she 60.
Listen mainly to Pop, Dance Pop, EDM, Chill, Trance etc. Lots of Bebe Rexa, Griff, Lights, i_o, Astrid S, Sigrid, Maisie Peters, Mimi Webb, Dagny & many of the DJ 'dance' superstars etc.
We do sometimes skip back in time when the mood takes us, albeit not very often - early 70's (me) mid to late 70's (she), some early heavy/prog rock (me) and some Britpop (both).
Musical tastes are very personal and I read that about 80-90% of people as they age (30+) get locked into an era eg their teens or other particularly important period of their life and they stick with it. Fair enough, whatever floats someone's boat. Interestingly, this group are also more likely to rewatch old films, old TV shows, watch Plays multiple times etc than the residual minority percentage.
We, however, are one of the lower percentage that like lots of new stuff and probably add around 30 new tracks per week to our 'archive' - Spotify comes in very handy for us.