Thank You, Please!

I have noticed a growing trend among a certain demographic. It is the definite lack of please and thank yous. For instance. . . "Give me," Or "I want," have replaced "May I please have." Suprisingly it is not the teenage crowd who is guilty of this. In fact most of the teens that I deal with are exceedingly polite (maybe it was drilled into them by the same insane nuns who drilled it into me). No, the main culprits are the dread 45-55 year old women. It seems that women who are fall into this demographic have something to prove by not being polite. I'm not saying that a woman needs to go back to walking a few steps behind a man and agreeing with whatever he says. Far from it. Is it too much to expect a simple thank you instead of a look of vast superiority?