Well, I'm not saying Anakin's downfall was planned from birth. I can only presume the Force changed the purpose of the Chosen One, when he saw in what kind of environment. Thing is what I questioned a lot is. Was the Chosen One meant to become a Jedi? 'And in times of Despair. A Saviour will come. Who shall be known as the Son of the Suns' That is the propechy. Does it say anything about him being a Jedi? No, the Jedi only presume so, because it is a Jedi Prophecy. Which shows ignorance and arrogance. Again that's the proof which shows how similar the Sith and the Jedi are. Their arrogance was the Jedi's downfall. Even Yoda saw that they were becoming more flawed. And there was the corruption of the senate, which became larger and larger. The Republic had to change, dramatically and the only way was through revolution which Vader started. Everything had to be rebuilt. So that is my clue that it was meant to be.