Roon's ability to play or suggest new music to me has enhanced my music enjoyment far more than any gear upgrades that I have made.
I agree with you.
To the OP, the answer is - if you do stop listening to new music, you are only cheating yourself. Listening to new music does not mean you have to like the old stuff any less. Abundance, not scaricity. You should follow your own advice,
With the maturing of streaming as a music delivery platform, and the ease of being able to surf new artists and music, it might be time to break my old listening habits and find some newer artists.