I think both ways are valid and it's not just because I read the answers to this before I answered and realized I have the minority opinion.

Yes, it's just what I'm used to

Definitely.

Lol you're talking to a generation that has politicized pronouns and doesn't even use them in a correct way. 🤣

yes, I am by no means a grammar fascist - I have long held that the point of language is to get your idea from point A to point B, and if the idea arrives at its destination then mission accomplished BUT a lack of clarity might land you in the wrong destination and Oxford commas provide that clarity. People are dopey and uneducated and quick to leap mentally - don't leave your words up to their interpretation, be as clear as you can!

Team Oxford comma. And team Oxford semicolon.

German grammar forbids it in most cases but I celebrate it using it when I do my long sentences that people rightfully fear like the black death!

What inhahe said

I don't have a consistent policy on the Oxford comma--sometimes I use it, sometimes I don't, based on whatever flows best with the context. Though I think it's only really acceptable to to stick to one way or the other within a single document, not sure if I usually bother to do that or not.

Yes! one must use an Oxford comma, come on ppl.