This has changed for me. When I was first exploring Jazz, for example, it was very exciting. It seemed like an entire universe was waiting for me to discover it and most of what I listened to was previously unknown and recently purchased.
However, as the decades have gone by, I’ve found it harder and harder to find new (to me) music that I want to buy, so I tend to listen mostly to what’s become familiar.
This doesn’t mean I don’t still spend time looking for new music to buy. I do. But now, it takes a whole lot of looking/listening to find anything that really grabs me. It’s not because there’s a lack of music. My taste /personal preference is the limiting factor and it’s very stubborn!