Although about an hour after waking up I am not able to communicate (I need at least (coffee) (coffee) and (smoking) (smoking) (smoking) (smoking)), but I always growl, it is polite, even if with expensive / expensive you have been sleeping for years and you saw him / her 2 minutes ago with his eyes closed. yes, in the morning I greet, it is an automation that I can not and will not get rid of, I even greet the saleswoman (sometimes even in the supermarket cashier), the guard on the corner (I shake his hand from the car), I greet the children, just - so they taught me : to greet is decency and last but not least the signal I registered you / you. (tuxedo)