A "Basic" class in my all women's college (circa early 1980's) sounded intriguing. I discovered I had a natural knack for it.
Exploring the nooks & crannies of the latest version of Microsoft's data access platform in order to help others learn how to use it. Most fun is going back and forth from Windows to Mac to build apps that include these APIs.
Being able to code on a variety of platforms after decades being locked on Windows.
Don't let others steer you away from what you know you want to do!