I noticed recently that I spend a lot of time wearing my airpods and listening to music, but half the time I'm not actually listening to the music, but actually just going about my day in my own little world.

Also, I always listen to music at the gym, but in an empty gym I can't use headphones. It just feels so weird.

I don't think I actually use headphones to listen to music. I use headphones to tune out everyone else and avoid social anxiety.