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.
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.
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.