Had a conversation about this with my wife and girls this morning.l loved your “childish” paradox of “can God make a rock so heavy he can’t lift it.”
My wife underscored the patience of God.
Evil exists now because 1) evil began and 2) God has not eliminated evil yet.
Were God to eliminate evil now, He would be eliminating a lot of people. But out of grace He gives us time to reject evil.