As you don't really have to hate Christmas music because you can just turn it off, I think that the thing to hate most could be the constant bombardment with it that starts on Dec 1. A huge culprit in that regard in the UK is Classic FM. From that date until New Year, tune to Classic FM for even just a little while and you'll hear all the recycled/regurgitated/refashioned/rejigged old Christmas chestnuts over and over again, ad nauseam. Now when I'm driving along, and Radio 3 is playing some God-awful Second Viennese School atonal string sextet or something, my resort is to retune to Classic FM for a bit. But that cannot be done in December. If my choice in December is between the Schoenberg, Classic FM or to staple my left tit to an angry beehive, the latter wins hands down every time.