...because I think that the strategy guide is quite useful. You would have to be a buffoon to need actual STRATEGIES to win the battles - this is not the intended purpose. However, knowing that the marquis has an entire complement of Genji armor, which otherwise cannot be found, makes the gaming experience much more enjoyable. Also, knowing WHERE to find Cloud's materia blade, without which he cannot perform any special attacks, is quite nice. I guess I COULD complain that Square put these things into the game in order to get us to buy strategy guides, but hey, that's not a complaint against the GUIDE, right?
All in all, I found the guide useful, and I would recommend it to anyone who wants to get everything possible out of the game. However, if you need the guide simply to get through the battles, well, maybe you should switch to another game, like Candy Land.