Why This Man

Six years ago today, Western Union ceased sending telegrams, something it had done for the previous 155 years.  The telegram had long since become a largely useless form of communication, but Western Union was still sending 20,000 a year.  That of course begins the question, why?  With the telephone, the cell phone, email, text messaging, instant messaging, etc, what do you suppose was the demographic for a telegram sender?  All that said, I've never received or sent a telegram, which makes me a bit sad.  Anyway why this man?  This is my Great Grandfather, a station agent and telegraph operator for the Milwaukee Road.