Actually, I would like to thank people like you who don't have a mic. I can't count the number of times I've had to mute to keep from losing my mind. I mean I know they are there to communicate with other players but it is very hard to get some of the players with rather large egos to shut up. The last time I played L4D I was looking for the witch. I knew she was around and was trying to listen for her when all I could hear was a guy counting how many zombies he had killed in the game. Long story short, I got my head given to me on a silver platter by the witch cause I ran smack dab into her. SO mics, when used responsibly are very helpful, in the hands of a prat, totally useless. If you feel you must run out and buy one, go ahead but they aren't necessary in my opinion.