New to me, I don't even use a mic. Just get sick of people asking if I have Skype when I want to play a game and then kicking me out when I don't.
I'm 32 years old gaming isn't that serious to me anymore. I play competitive games still like COD but just to have fun. I don't care if I am 1st or 10th on the team in kills/deaths.
These Skypers are taking what should be a casual experience and making it so if you aren't as hardcore as them they kick you out.
What you're probably missing is that most public games are probably like that, being jerks about everything, not just voice chat.
I have never even once joined a public voice chat, through skype or any other, although even 10 years ago when *I* was 32, I've constantly used voice communication with guild/clan mates while playing WoW and other MMOs through Ventrilo or TeamSpeak (and recently, Mumble). It just makes perfect sense and a huge help in coordination when you can simply speak instead of typing.
In sunmary, voice chat is a legitimate tool for online gaming and it has its place, however it's definitely not a new or young thing, and if there are public games out there that require it and kicked you for not having it, you're likely better off.