It is satisfying and fun to bring out the maximum potential of your characters. It's not that the game is too hard. In my expert version of FF6 I tweaked the game so that there are level 99 challenges. The battles are truely epic, and it's great. That's what it's all about.

You haven't mastered an RPG until you've brought your main group up to level 99, collected all items, learned all spells and beat every sidequest.