I definitely understand where the OP is coming from. A big problem is that Escapists are really obsessed with objectivity, even to the point where they'll objectively explain concept of subjectivity. This often ends up with comments like "hip hop isn't music, it's just words to a beat" and some honestly believe that's a valid argument. It comes down to people on this site simply not being into music as much as they are games. When you aren't as invested in something, you often take the safe route and don't like to branch out or experiment because you haven't yet exhausted what's been made available to you. But people also like to sound decisive in their arguments, even about something they don't fully appreciate.
Many Escapists will tell you that they "totally appreciate music, they just don't like certain kinds and that's their opinion and you must not understand what an opinion is." Truth is, you are completely right, there is a lack of music appreciation, caused by the inability to get past certain prejudices. People think that having an opinion on a subjective matter automatically excuses them from accusations like yours, when it absolutely doesn't. Maybe hating an entire genre of music is just a part of your personality but that still means you don't appreciate music as much as you should.
Appreciation is about being open-minded with your opinion, not sealing yourself behind a wall that's been mislabeled as "subjectivity". Don't use your opinions as a guide, use them as a description. Opinions are the result, not the criteria, anyone who truly appreciates something knows that.