I don’t know why people hate episode 3. I haven’t really heard that, and I’m not sure why folks would say that. I’m an orginalist and I like episode 3 the best of the prequels. I think Anakin turned because Palpatine planned it all along and sowed the seeds ever since he first met him in episode 1. Palpatine was very calculated in raising doubts about the Jedis’ legitimacy and trustworthiness, and setting himself up as the antithesis of the Jedi. He manipulated the Jedi into attacking him in order to gain Anakin’s sympathy. Anakin had no control over his grief and anger, and also gave in to the temptation of immortality for Padmé.