Why does most new music suck?

The amount of new music is unfathomable. To subject this to a generalization of "sucking" is not only unjust, but incomprehensible. Not sure what the audiophile audience is looking for, but quality is out there...in all genres. Certainly, it is evolving. Listen to jazz. Most purists denounce it's innovative progressions....been this is an issue since Parker broke the rules.

Is classical music blues or zippity-doo-dah?

Take any single year over the past 100 years and the majority of music produced that year sucks. The same goes for movies, art, plays, etc. The music that gets remembered 10 or 60 years later is obviously the best music from that period. To compare the best music of the past 100 years to whatever is being produced now is not an apples to apples comparison.

The economics of the recording and music distribution industries has radically changed in the past 20 years. The end result is that there is vastly more music being commercially produced, but it is now the listeners' responsibility to find it. Radio stations, magazine reviews and record stores only hint at what's available. Another economic change is that streaming services make it impossible for a songwriter to live on the proceeds of their songs.

And if anything above is too complex or just plain wrong, we can always blame Sweden.

Czarivey--that's beautiful. I didn't know the man but in the Gospel according to Wiki it's said he cited Tchaikovsky as an influence, FWIW. Personally, I think anyone who can't hear the blues in pieces such as Bach's D minor Chaconne (2nd violin partita) or Beethoven's Grosse Fuge have a narrow view of things.

Music reflects the times in which it was recorded and the intended audience.

60's and 70's - drugs, sex, anti war, and rock played on an LP.

80's and 90's - CD's in early stages of development, and rap and hip hop.

2000's - Screwed up. lost, and broke youth, listening to low Rez files on earbuds. The end of mass home listening on speakers.