To me the thing was with II and III we were supposed to like and sympathize with Anakin. It would be like losing a member of our family like Rick M said.
It should have been about choices and the slow seduction to evil by slowly making him make compromises which ultimately undermine the person he once was. But he never really was that noble idealized individual we thought he was, it was all lies by Obi Wan to train Luke to be a weapon to destroy his own father.
Based on the poor way the prequels came out i believe Anakin in Episode III the Jedi are Evil. Obi Wan is the most vile and evil person imaginable and so is Yoda.
Luke is just a pawn in their quest to defeat the Sith and Palpatine and cover up their failings.
Had Luke known the truth he would have no more joined the sith than the jedi maybe he would have learned the force and wiped both of them out as they were both clearly evil and manipulative in seeking their own ends.
Both Sects of the same religious dogmatism and clearly both placed themselves above people.