This is exactly the same for me—I grew up playing the piano for basically my entire childhood, but it was always a chore. I dropped it once I went to college and figured I'd never pick it up back up, but then I decided on a whim to learn a song I found online. But b/c now it's no longer just for the sake of lessons, it's become a hobby that I really enjoy in its own right (and indeed, all the forced practice growing up has greatly expanded the range of songs that I'm able to learn now).