We often doubt if God wants to and will intervene in earthly affairs for the good. We end up "fixing" things ourselves. But human efforts to perfect the imperfect prove to be little more than a short-lived fix. Our attempts to right the world bent wrong, go wrong. How can you level something when the level is off? Would you call in a cosmetic patcher-upper when you need to repair your roof? Of course not.
What did God the Father do by sending His son: He was injecting in this world a new dynamic in this situation, something never seen of or heard of. His incarnation became the first step on a journey towards full redemption of the fallen world: which is why He is called the Hope for humanity.
Imagine waiting your entire life for the commencement of the righting of all wrongs? A man named Simeon had been waiting for the Christ and was rewarded for his eager patience. The reaction of Mary and Joseph is remarkable because it's the only record of their marveling:
"... there was a man in Jerusalem whose name was Simeon, and this man was just and devout, waiting for the Consolation of Israel, and the Holy Spirit was upon him.
...it had been revealed to him by the Holy Spirit that he would not see death before he had seen the Lord’s Christ. So he came by the Spirit into the temple.
And when the parents brought in the Child Jesus, to do for Him according to the custom of the law, he [Simeon] took Him up in his arms and blessed God and said:
“ Lord, now You are letting Your servant depart in peace, According to Your word;
For my eyes have seen Your salvation
Which You have prepared before the face of all peoples,
A light to bring revelation to the Gentiles,
And the glory of Your people Israel.”
And Joseph and His mother marveled at those things which were spoken of Him.
Then Simeon blessed them, and said to Mary His mother,
"Behold, this Child is destined for the fall and rising of many in Israel, and for a sign which will be spoken against (yes, a sword will pierce through your own soul also), that the thoughts of many hearts may be revealed.” Luke 2:25-35