It depends on what kind of game you´re making, say a horror game, by nature a horror game does not need that much voice acting since it´s better of trying to spoke you with it´s environment.
On the other side, an First Person Perspective RPG where you interact directly with other characters I find it very immersion breaking when they don't speak with you.
On the other side, an First Person Perspective RPG where you interact directly with other characters I find it very immersion breaking when they don't speak with you.