I am a strong believer in the oxford comma
Like, fr, y'all, why the fudge would you not use it???
IT MAKES A DIFFERENCE
Say, for example, you have a grocery list like this:
Cereal, oatmeal, bread, peaches, and cream
BUT, if you don't use the oxford comma, it becomes:
Cereal, oatmeal, bread, peaches and cream
This then implies that the peaches and cream are TOGETHER and not SEPARATE ITEMS
It also makes the sentence seem kind of incomplete, and no one wants that
So use the oxford comma y'all, please, or I will come for you