Some people might like voice work - to me and many others it just shatters the role playing experience because it breaks whatever voice you have created and attached to that character in your mind.
Everyone likes to dish on WoW because it's biggest, but I like its approach to voice. A few major plot characters are voiced, we have the famous Blizzard cutscenes that are on par with AAA *movies*, and very few "Shut down ALL the beacons!" moments. Your character grunts when hit, has a battle cry and a death cry, but everything else is voluntary and done via commands. Most NPCs greet you, many with a few words of their native language. It all sets a mood/tone very effectively.
EQ2 was much more hit or miss. The usual range of battle cries and grunts is well done and like WoW, adds flavor...particularly the distinctive Iksar "Sup!". Sounds cheesy but it's actually pretty endearing.
The Sarnak are beautifully voice acted. For an "evil" race in a neutral city...it gives them depth instead of seeming like the programmer forgot to flag the banker to have a faction. It shows so many small points about this young, proud society...that their females are equal warriors, that they have everything from eager young ones and bad cooks to hardened sneaks willing to fight dirty. Incredibly, incredibly well done.
And then the single worst voice acting I've seen comes later in the game. It's immersion breaking and poorly done. Out in Velious, there are a couple quests which run you thru different options and your response is a very derpy "I don't know!". It's practically offensive...it's the sort of tone someone might use mocking someone with an intellectual disability.
Add to that there are only 2 voices for it...one male, one female...and it's cringe inducing. Maybe my barb SK really is a bit...slow. Not how I saw her but tolerable I guess. For my Ikky Beastlord who has an entirely different voice to use the exact same dopey sound effect was completely immersion shattering.