I feel like voice acting reduced the amount of text in the game, and dialogues are differently structured compared to games with no voice acting, which tend to have a more narrative style. Also I get impatient waiting for the npcs to finish so i can read on.
In my opinion Immersion is a function of good storytelling and, with regards to video games, possibly atmospheric graphics(meaning: more the artistic side of it). I think game studios should consider doing more text-heavy rpgs again so that talented writers can tell the story without the constraints of voice acting.
Your opinions?