Don't play the game as a mage - you will get bored quickly!

[Handel]

As I wrote I sometimes did used different spells only to find out this was stupid.
But if the game becomes boring when playing a warrior this simply means the battles are too much. Indeed - many of the battles could be avoided but this means much less XP.
So it appears the game should have much more quests and more opportunities to earn XP without battles.