That vague and interstitial domain known as Cultural Studies.

It's an area I have very little formal training in, and have lots of opinions about. Because I have little formal training, I am forced to think hard about whether my speculations stand up to scrutiny, and I put extra effort into structuring an argument. That, I find very enjoyable.

I enjoy writing about stuff I am actually trained in, as well. But that's not nearly as challenging.