Hey i've just recently started Mirage and I usually do every single side quest the game has to offer me but I soon realized that none of the side quests in Mirage give any XP. Is this true with all the side quests? If yes is there any point in doing them?
Yes it is. The side quest reward system for Mirage and Empyrea has changed since you're starting Mirage. Instead of giving experience, those quests rewards you with golds and other items.
I dunno why. Maybe KI don't want you get maxed out by clearing side quests instead of completing main quest. Maybe some reason could occur.