Sometimes I wonder why my kids seem so incurious.
Perhaps, as with anyone else, they simply keep their curiosities to themselves. Curiosity unties the shoelaces of conclusion and safety and when your shoelaces are untied, there is a good chance you will fall on your ass.
Of course there is a good chance you will fall on your ass even when your shoelaces are tied, which makes me wonder still more why, on occasion, there seems to be a deliberate lack of curiosity.
Spiritual endeavor is a good case in point, but then, so is anything else: Don't you want to KNOW ... know who is God, know gravity's essence, know why ants wiggle their antlers, know ... anything... pick a subject.
Maybe incuriosity is just another way of expressing curiosity.
I'm just curious.