1
Play smarter and better.
You're busy unloading a magazine on an opposing force when you catch glimpse of a grenade rolling up behind your teammate. There's no time to type a text message, but with a two-way headset, you'll be able to alert your comrade to the danger before it strikes.
2
Talk trash up close and personal.
"You suck" means so much more when you say it out loud where everybody can hear it. Whether you're talking trash to a camper or congratulating a teammate on a well-placed shot, voice chatting is the way to go.
3
Take a break from the action.
Trigger finger feeling worn out in the middle of a deathmatch? Take a break and shoot the breeze with your fellow players.