<p>In effect, waiters and waitresses, given how little they are paid, are more like contractors then employees, in effect with tips we are paying the waiter/waitress to get our food and such, since very little of the cost of the food represents the employees wages. Especially on things like wine, beer and liquor, the house has incredible markup (that 8 buck glass of wine costs them less then a buck), in effect we are contracting with them to get our orders and such and the dinner bill is payment for materials alone. I only wish they were paid better, but that is how restaurants work and they are exempt from even minimum wage standards and the reason was because it is expected they will get tips (not all that different from strip clubs, where in many of them the girls actually pay to work there, and share a percent of their take with the house as well). </p>
<p>That said, a tip is still for good service. If a waiter/waitress is inexperienced or is trying but struggling, or it is crowded and they don’t have enough servers, I can understand that, likewise I can’t punish a server if the kitchen is fouled up, which in my experience is more common then the server screwing up,I won’t punish them for it. I do resent being told to give a tip no matter what, I am pretty soft hearted, but if I get an indifferent server who doesn’t care and has an attitude like they are doing me a favor, I will not tip as well or at all, and will tell them why.</p>
<p>In terms of where to tip and not, that has expanded over the years. Up until not that long ago tipping was not allowed or at least not common in delis or fast food places, that is in recent years, that generally was relegated to personal services, either a waiter/waitress or delivery person. Likewise, it was traditional to tip delivery people with heavy items like appliances (you didn’t have to, but it was appreciated), or with things like hair cutting and such, things where it is personal service. With the nail places from what I can tell tipping started when the waves of nail places opened up in recent decades. The people who work in those places don’t make a lot and tipping, like with waitressing, kind of was seen in the same way, as a way to help them make a decent wage I suspect.</p>