To the people who think voice chat is a bad idea:
I can count on one hand how many times I've had a bad time with some asshole in voice chat in any game I've played across over a decade of playing online games. All the horror stories of whiny annoying children in Call of Duty are a very small minority, and even when you do run into them it's nobody you're likely to run into again.
To address another point, you can't point to the chat where people are jerks sometimes and say that that's what all of voice chat will be. Voice chat is an entirely different environment than text chat and people do not act the same in voice as they might in text. Not to mention saying that everyone will act exactly like a minority in the community is an absurd assumption in itself.
Nothing can be lost by adding voice chat, but so much more communication can be gained. Don't let some horror stories of one or two people that some guy you never met ran into online in entirely different games cloud your judgement.