"Why, oh why should I play FFXIV oppose to all other MMOs?"

Add that to the other list of questions you should learn on your own, like:
"What's the meaning of life?", "How can I find true happiness?" and "Am I pretty?"

Final Fantasy online was originally developed for fan-boys and girls of the FF series. Well, that's why I play anyway. I enjoy sharing my love for FF with others who do the same.