I'm midway through my 4th decade. Other than having more music to choose from these days, my tastes haven't changed much. I go through cycles, in which I listen to one artist or genre more than others for a while, but the songs I have in rotation have remained diverse.
Between piano lessons and various school and church bands, I was exposed to a wide variety as a child. I grew up playing classical and jazz, but I also enjoyed the popular music that my older siblings listened to. My parents primarily listened to classical. This meant I got to listen to most electronic music and rock without it seeming like "Dad rock" or "Mom core". Some of my favorites were recorded long before I was born, yet they still feel like "my" music. Similarly, perhaps in part because I don't have any children, I listen to the music of today in much the same way that I did while growing up.