Morale 15 is a useless saint bonus when you hit 100 morale

[Legolas Bow of Athena]

+15 morale isn't really a useless attribute.

I can name several others that are less useful than it.
(magic defense, break, etc)

If you can explain the benefit of it 2 weeks into the game when all your heroes already have 100 morale from partizan, righteous (only about 16k rune experience for 100 morale), or endurance or anytime thereafter I would love to hear it.

Magic defense reduces magic, makes sense. Break reduces it being blocked and you being countered, makes sense. Morale +15 does nothing, does not make sense.