Or have everyone just be born knowing whatever God wants us to know.
If that were the case there would be NO REASON for us to have to traverse this physical existence in the material world, learning as we go.
Any sort of intervention by God would imply that his creation is imperfect... and therefore that he's an imperfect creator.
That is overly simplistic and it assumes that god should create everyone so perfect such that they can never stray off the path and make mistakes. It assumes that man does not have free will to choose between right and wrong, which would make man a robot, God’s pre-manufactured robot, a being without the ability to make any choices; or at the very least it assumes a being that could only make good choices, kind of like what Christians believe about Adam and Eve before they sinned.
What you believe is as much of a fantasy as what Christians believe.
Logically speaking, if God is All-Knowing and All-Wise, and if man has free will, this would imply that God knows more than man about what man needs and man is in need of any guidance from God. That is why the messengers are sent, to guide humanity to the straight path.
While I dismiss most of deism as ridiculous, one valid point that the deists make is that a god whose creation keeps running fine by itself would be a more competent god than one who has to keep tweaking his creation to make it run properly.
LOL, is what you see on the television news an example of a creation that is running properly?
God does not tweak His creation. God sends the messengers to assist man to tweak himself. They are Educators, just as necessary as the educators children need to learn and grow. If God had never sent them humanity would have completely perished long, long ago.
Edit: IOW, any creator-god that needs to send messengers is at least a bit of a failure as a creator-god.
So a God that uses messengers is a failure. That could only be true if mankind does not need any assistance from God after he is created; but since messengers have been sent from the dawn of human history, you cannot prove that mankind ever got by without the assistance of messengers of God.