When I took a creative writing class in college we would workshop each other's pieces. Each student would have a copy and read along while the writer read aloud. We would correct grammar, spelling, and punctuation errors as well as make notes on story content. The writer would have to read all of the comments and make appropriate changes.
Anyway, I was one of the oldest students in the class and was noticing that I seemed to be the only student using the serial comma. I would add it to the copy I had but the students never added it in their revisions. Finally, I spoke up during one of our discussions and asked if the rules had changed since I had learned it. The professor said that in her class I was right and the others were wrong since she adhered to MLA format. Before that I was unaware that it was even considered correct to not use it since all of my papers had to be written in MLA style and it was what I learned in elementary school.
"All our dreams can come true -- if we have the courage to pursue them." -- Walt Disney
We must have different Gods. My God said "do to others what you would have them do to you". Your God seems to have said "My Way or the Highway".