I guess it depends . As long as it's not terrible I don't really pay attention. I don't go into a game expecting a character to have a certain voice. But a lot of games have many choices and some sound off.
For example a few in WOTR are just bad. Like I had to restart it when I heard certain lines. Or I don't like how some games have a "gruff" voice and it just sounds funny. Black Geyser is guilty of this.