I enjoy learning and teaching. In my spare time I build, or often half build things, and then write about aspects of the process. For the longest time I didn't

I enjoy learning and teaching. In my spare time I build, or often half build things, and then write about aspects of the process. For the longest time I didn't even share my blog with people. I recently started sharing one particular series and I've gotten a number of comments on "why?" or "why not just use X library instead of building it from scratch?" Doing something just because seems lost on some people.