I was on my way to feeling that way too - after watching AOTC. But then I watched ROTS again and it just came across so unrealistically, I changed my mind again. Even though Anakin may have had all the reasons that Lucas has provided, it was just all too quick - even for the impetuous Anakin. This wasn't killing evil doers like the Tuskins and getting carried away - or like Dooku, also getting carried away. This was taking the time to mass up the Clones and get to the Temple - quite a lot of time to "think". He went there planning to kill them all; it didn't just happen in the heat of the moment like the Tuskins or Dooku. I just don't feel it worked for me anymore.