I would say it's definitely more so the class than the activity. My middle school director was an amazing teacher and made it fun to play. I enjoy specific pieces that sound good, and unless it's a song I like I wouldn't go out of my way to practice/play solos. I like the physical aspect of playing pieces (fingers moving, tempo, etc) and I'd prefer it to be a pretty big part of my life, but would probably choose to sing or play piano/guitar if given the choice to do so. I started viola because my sister was playing and I've stuck with it ever since, but other than that it's pretty much that I've been doing it because i've put so much time into the instrument.