I remember being encouraged to write like this in school. It's so dumb though. By the time I've read all the fluff I don't even remember the topic. Why should I subject anyone else to this. Does the teacher really want to read this meaningless drivel 20-30 times?
As it should be, I figure. My work emails are pretty funny. Everyone follows standard letter format, but the main part is so short and minimal that it feels dumb to have used the proper greetings and closing format.