If you don't mind, please do... but rather than just say why, please back your argument up with actual figures showing just how much of an effect voice chat has on a game. You see, I just don't see that it would have too much of a detrimental effect on the game.
Also, without being able to chat to my friends, multiplayer games just feel a little soulless. They're not worse per se, but they're not as fun!