Mid 40s here - I mostly listen to stuff I'm already familiar with (albeit a pretty wide range, or at least I think so), and/or stuff which is from the same eras/genres/etc, particularly if it's something acknowledged as influential on something else I know I like
Eg 1 - I'm a huge R.E.M. fan, and via them I discovered (some time ago, admittedly) artists like Patti Smith, the Velvet Underground, Leonard Cohen, etc.
Eg 2 - I am very much into house/techno, and have discovered so much great stuff old and new via a regular recommendations event on BlueSky (#RaveyardShift, Saturday nights from about 10pm, UK time, if anyone is interested!)
Eg 3 Although I don't do this so much any more, I found that getting Tidal to generate a radio station based on a single song I like is often a great way to discover other great music in that genre whether it's funk/soul, hip hop, post punk or whatever.
In all of the above, almost none of it is new... but it's usually new to me, and that's good enough.
I used to worry that I wasn't keeping up with new music, but after a while I realised that that's ok - there's really no need to worry about that as it's literally impossible to hear everything, so just find stuff you enjoy, let others do the same and don't worry about it.
As an aside, I'm not religious at all, but I've long had this concept of "heaven" as a place where you simply have the time and resources to experience EVERYTHING you could ever want to. Every song, every movie, every flavour, every sensation, etc.
That'd be kind of cool. Although I'm conscious that that's the Côtes du Rhône talking... 😁🍷