A) I don't have any excuses for going over a month without seriously dwelling on God's Word. But that's what I've done.
B) Nobody knows what it's like to be God.
I think that (point B) is the key of this passage. I can see people taking Job Chapter 38 to be God's chastisement to Job for asking God questions (You have no right to ask Why?). I can see people understanding it to be God's statement of distance (You aren't on my level, so you can't expect me to relate to you). But neither of those adequately reflect the words or the essence of the passage or other revelations God has made about Himself.
No, the point seems to be that humans like Job & friends (and us) have no clue what it is like to stand in God's place or to wield God's power. So when we go beyond asking God "Why?" and venture into the land of making conclusions about God's motivations and reasoning . . . we're publicizing our idiocy.
We don't know what it's like, and we should never have the arrogance to conclude why God has done anything, unless He has spelled it out clearly in His Word. Even then, we shouldn't claim to comprehend the magnitude of God's actions, only gratefully awed that He would include us in His explanation and in His plan of grace.