What do you enjoy about the process of your work?

I'm finishing up my bachelors in computer science, and I've started to wonder what I found so fun initially about giving instructions to computers.

When I ask people why they enjoy their work, I'm often given an answer related to the outcome of the work. A common one is "changing the world" and "making the world a better place." Or for finance types, "Providing liquidity to markets."

So I'm wondering, what do you enjoy about the minute-to-minute, hour-to-hour experience of your work?

Perhaps it's foolish to expect pleasure every minute, but I've been wondering if I can feel the same way doing math and programming as I do when drawing or writing music.

Thank you for your candid responses.