Thanking Those in the Service Industry

Through both working in the service industry, reading accounts of those who work or have worked in the service industry, and observing general treatment of those in the service industry, I have come to the conclusion that we do not treat these workers very well. By service industry, I mean customer-serving jobs that generally don't require a college or technical degree, including (but not limited to) waiters and waitresses, retail/customer service associates (this includes clothing stores, grocery stores, gas stations, and any other business where items are sold), front desk operators at businesses such as hotels, janitors, maids and housecleaners. While I am not making a blanket statement, as I have seen many people be kind and friendly to those who are serving them, I will say that too many people seem to be forgetting that these workers are people and are treating them as though they are machines or something less than human whose sole purpose in life is to serve.