[Messianic]

Some people care about their time, others don't. No one should assume everyone should think or be like them, or "strive to be like" someone else. Fact is we're different, and there really isn't an objective way to say who has a better opinion.

So if you expect money, communicate that - if you don't, communicate that too. That way, no one assumes stuff without reason and no one gets all pissy that some people expect tips and no one gets all pissy that some people don't tip.