Blah, blah... what???

have we gotten to be such a self - satisfiying society and "I'll get my own" society that we don't need another person's simple.. "have a nice day" sign off? What happened to "how are you doing?" and actually stopping to listen to the answer. Am I that uncool to think someone actually cares that I actually DO want them to have a good day? So.. it won't matter after I'm done talking to say "I hope your day stinks like a soiled diaper left in a garbage bag in the hot sun" Have a great day.