I feel Ike the feeling of being served on our society has everything to do with economic equality. There are professions that pay more or less, and people with professions that pay more are able to afford services that people with lesser paying professions can provide. Using words like "profession" and "service" tend to imply that these are normal, usual things that happen in "free" societies, a.k.a. capitalistic societies. If I'm not mistaken, this is essentially the exploitation of the working class that Marx was talking about.
If everyone earned the same living, then there would be very little serving happening, because everyone's time is effectively worth the same amount, and thus it wouldn't make sense to give away all your money to people to perform services for you that you could have done yourself if you didn't have a job.
The reason that people serve other people in our society is that we're unequal, and there are socio-economic reasons for that. I believe it has more to do with economic inequality than Nietzchean slave morality.