No it isn't getting to the loyalty "thing", but Cid IS like Moogles or Chocobos. Your question is faulty. If you accept Chocobos and Moogles, why not include Cid. If you had rearranged your question as "I don't like Cid, I hope they get rid of him" then yes that is your opinion, but saying "Why there must be a " Cid " character in most of Final Fantasy projects ?" shows that you do not enjoy the repitition of characters between Final Fantasy games. Therefore, accept the facts or change your question!