I care, a lot. But this wasn't always the case.
Before I was 13, I didn't care much about music at all. Sure, I liked some songs I heard on the radio but I didn't own any albums in any format. I considered music to be a harmless but mostly pretty meaningless.
Then my 7th grade music teacher gave me a really low grade, on the sole basis that I couldn't sing in tune or play an instrument. I got good grades on the written tests, but this apparently meant nothing to her.
So purely out of spite I decided to learn how to play an instrument and sing. Getting music classes wasn't an option due to my parent's economic situation at the time, so I used my savings and bought my friend's old acoustic guitar. I found good intro books from the library and started practicing.
I listened to the radio and recorded a few acoustic guitar songs on tape, so I could practice playing and singing along with them. This must have been a terrible few years for my family, but slowly I started to get the hang of it.
During this time I discovered some bands I really liked and copied their albums from LP's from the library. My dad brought me an old discarded boombox from his work, it was big but had an excellent sound. I also scrounged enough money to buy a secondhand Walkman, so I could carry the music with me.
In high school I formed a few bands with my friends, I played rhythm guitar or bass, depending on the genre. We weren't good, but I loved it. In university I had a chance to minor in music, which opened up whole new worlds for me. I learned to sing properly and had piano lessons.
By this time music had become a big part of my identity. I almost always had something playing on the background, if I wasn't listening actively.
Nowadays I don't have as much time for music as I'd like, but I've got myself a really good vintage Hi-Fi setup. It's amazing to discover small things in songs I never noticed before in songs I have listened for decades. My gear may not look like much, but it's got what counts.
When I was younger, I couldn't afford good gear but now that I have some musical education and have learned to listen", I can't really enjoy the music if the sound system is crappy. If it's in the background it's fine, but I just can't use bad headphones anymore.
I listen to music from a large variety of genres, but hiphop/rap is something I just can't get into. I've tried several times to approach it with an open mind, but there's something in that genre that just rubs me the wrong way.
I don't care if the music is a jokey meme thing or considered a masterpiece of it's genre, if it clicks with you it's good. I love symphonies as much as I love old simple folk tunes.