I'm 44 and finding new music all the time. Keep in mind that as you age your musical tastes will mature, so you may need to embrace new sources for music. I started listening to public radio(CKUA) here in Alberta and also CBC music and I've discovered so much amazing music in the past year. I'm a big classic rock fan, but it gets old after awhile. you have to put the effort in to finding new stuff. I've gone through phases of adult alternative, electronic ambient, electronic retro synth, folk, and even starting to appreciate some country. Don't be afraid to listen to genres you think you don't like, cause some day you might like them.
Edit: also keep in mind that the music that has the deepest impact on us is typically music we're listening to during times of strong emotions. Which is why nothing quite compares to our teen years when our hormones are changing.