First and foremost, playing the game is like shooting heroin. It is very addictive.
Second, many players are members of squads. By using Roger Wilco or Teamspeak, communication is done primarily though the voice comms. Some of us read text only when we are not engaged with other duties. So, if someone doesn't answer your question, please ask again.
Finally, vengence is the best part about being killed. You can self-avenge an enemy who has killed you by sneaking up on him and using a pistol on them as just rewards.