This is one of the main wastes of time and money so many games fall victim to.
One more reason Fallout 4 was so bad compared to New Vegas. They poured time and money into useless things instead of making an RPG.
I don't need to hear my own voice, ever. Actually seeing the entire dialogue choice before I choose it is enough. (It's a problem when you don't know what you're actually about to say, but hearing the voice AFTER choosing makes no difference anyway!)
I support the current state of a voiceless protagonist so they can work on things that matter more for the RPG experience.