Ok. Bear with me, it's an interesting one. It seems to me that people who know and are passionate about music fall into two camps. Those who think you can learn to appeciate and understand all genres, and those who like some things and just can't get into others. I'm afraid I'm certainly in the second camp. If we stick to the 20th C , Music that I love tends to come from the following genres:
Minimalism, Blues, Country/Americana, Ska, Neo-Classical, Electronica, Hawaiian (seriuosly!) Bluegrass, Rock/Pop.
Then there is stuff that I've tried hard to get to grips with but ultimately leaves me cold. This is stuff like Jazz, Reggae, Hip-Hop and it's related Genres including most dance music, Atonalism, Opera.
Is it possible to like all of that stuff. My experience is seems to be that some kinds of music are mutually exclusive. I actually used to like Jazz and played in a jazz band for a few years. I stopped liking it when I started appreciating country. I'm can't see how it's really possible to passionately love one piece of music by Schoenberg and another by Steve Reich at the same time. One undermines the core values of the other.
Or am I just being like Homer Simpson, who said that there was only so much space in his brain and something had to go every time he learned something new. 'Like, when I took that home wine-making course and forgot how to drive'