Every time I meet a writer in whatever capacity, we eventually get into one of the biggest, passionate, (but friendly) writing debates — the Oxford comma. I would say it’s as equivalent as the “gif” vs “jif” argument. Although the non-use of it comes from AP Style and journalism, it’s always a toss up even for ad copy. And when you dare reveal whose side you’re on, you will get judged.
So I’m just going to get this out of the way: I’m Team Oxford. Go ahead, make your judgements and rant your arguments. I was brought up with the serial comma and it makes sense to me for not mistaking words for being together. But if a brand’s voice or publication’s writing style does not use it, I will conform and lead a double life as a serial user. Actually, I’ve been leading this double life for so long, I catch myself not using it sometimes out of habit… but I still refuse to change my stance!
I would also go as much to say that if you DON’T have a stance on it, you would be judged even harder. This is a writing staple — EVERY real writer has a stance on this clause.