I have certain criteria that I love in music. If music does not have most or all of those criteria, I find it uninteresting, emotionally and/or intellectually. And it's not like I made a conscious decision to only like music that meet those criteria, it was an evolution over the years.
Those criteria being (no particular order): very high level of musicianship, deep and broad levels of emotional and/or intellectual content conveyed, fairly high levels of complexity and sophistication, (usually) long form song structure that goes through changes in: mood, intensity, tempo, dynamics, time changes, etc., over its length.
I am bored by songs in standard verse>chorus>bridge>repeat structure, in 4/4 time, 3 chords, with obvious hooks.
As time passes, I become more and more intolerant of music that does not have those criteria. Even music by bands I used to love (Deep Purple, The Who, Led Zeppelin, Grand Funk, Black Sabbath, The Beatles, etc) does almost nothing for me anymore.
The genres that most often meet those criteria for me are:
Jazz - post bop, fusion, avant-garde, chamber-jazz, M-Base
Prog - avant-prog, Canterbury, symph-prog, Zeuhl, prog-metal
Classical - avant-garde, serial, atonal, New Complexity, Spectralism, 12 tone