Why is modern pop music today so terrible?

I suspect there are some good music history buffs, here.  I think we can safely say that going back at least 60-70 years that there was a large contingent that thought the "new" music was terrible.  Bullitt noted that the "parents said the same thing about the Beatles" and theirs the same about Elvis.  Same with the subject of the thread and probably everything in between--punk, electronic, hair bands, grunge, etc.

But how about going back further on folks I think most now can and do consider masters and the greats.  Mozart, Chopin, Bach, etc.  Or when new instruments were utilized.  Did a large contingent view them or  music using the new instruments to be "terrible?"  Was the piano viewed like the autotuner?

@stfoth,
That there are so many talented musicians playing classical music in China and are being recorded should be indicative that the genre is alive an well. 
Though I do agree that the majority of the population is probably listening to something more akin to current popular music, I think the proportion of US kids listening to classical is significantly lower.-Which breaks my heart.
B

I thank Providence for having let me be born in the '60's. Record labels/producers hired musicians who showed creativity, as opposed to what is now produced-music that will sell and make money-lacking any substantive/enduring quality. 
Though I expect things will eventually change for the better.
B

@gdnrbob.  Generally agreed, except for the expectation that things will get better.  I hope it's not just me becoming an old curmudgeon.  Some of it is relative, too, which I try to appreciate.

" Debussy understood that a work of art, or an effort to create beauty, was
Always regarded by some people as a personal attack."

The Seduction of Claude Debussy, The Art of Noise

Good, bad, and indifferent has Always existed.  Sometimes genius is only seen in the rear view mirrors of time.  Remember that fist fights used to break out at the debut of works that we regard now as art.  We don't fortunately have many of those event follow-ups of late, and it's good to see that the company gathered Here is keeping a lid on it. ;) *G*

I have my favorites.  Y'all have yours.  Place your bets on who and what will survive the grindstones of time and tastes.

Will the aliens, after sampling the selections on the Voyagers, show up demanding more Elvis?  Or will they get more 'au courant' on their way here?  One has to keep in mind that radio waves are expanding at the speed of light and Veger 1 &2 are a little pokey in contrast...*S*

What if they want Sum 41?  Or the Black Keys ("You can go with this, or you can go with That...") ?  Will they be fans of Deadmau5?  Or Pussy Riot?

I gave reading minds....same 4 things, basically.  Predicting the future is a waste of time, which we don't have enough of....

"Everyone wants to go to heaven, but nobody wants to die."

Ellen McIlwaine, song of the same line....;)