I guess there's lots of things that i love to do but since you brought up the music well my two first passions in the world are soccer and drum. Both of them own a very unique particular world for me and well i love playing drum, i couldn't find any instrument as fun as drum, it's wide, it's huge and it's 100 % the soul of music, 99 % of each genres drum is there, Jazz, remove all the instruments and bring guitars, could be country ? Rock ? Heavy metal ? ! Anything! Drum is there anyway! The fun thing for me is writing notes somehow slows me down, it cuts my creativity, i mostly prefer to play and memorize instead of writing.
Wish you the best of luck with piano! It's a very peaceful one! I like it! Keep working on it :)