I'll do you one better: why is Insight Kharazim?

I don't know if we have any reliable numbers anymore on the winrates of particular talents, but if you told me that [[Insight]] (blue fists) on Kharazim has a positive one, I'd be very surprised.

You're useless until you stack it by between levels 7-10 ish, you lack damage, you lack healing, and even though you have infinite mana, what exactly are you doing with that mana? Kharazim is limited much more by his health pool than his mana pool anyway.

If the cooldown bonus would work to some extent on his Spirit totems and his ults, I could definitely see myself picking it more, but every time I try it, it always feels really bad.