It’s because people have particular tastes. I’ve not purchased (or downloaded) any music for the last five to ten years or so, except an occasional rare exception (once - and I paid for the download 5$ for 36 tracks directly from the artist) - because it all sucks and is not worth it.
That’s simply BS. There’s plenty of great music being made. Apparently you like NIN so you like some loud stuff. Monster Magnet and Alice Cooper have both come out with great albums in the last year or two. It doesn’t all suck and there’s plenty worth it.