There is so much in programming that isn't necessarily directly in line with English, why are trailing commas any different?

This was just my opinion, and it was not based on logic: I battled through and now I'm a happy trailing comma-er. But if I think about your question, I'd say the answer was because commas are the only part of coding that has a strong resemblance to written english in that you commonly use them to separate items a list.