iPad w/o PC

When you go into the Apple Store and tell them you have an iPad and no normal PC, the expressions are funny. For as much as we’ve gotten to the point where devices like mobiles and tablets can live without the “host”-PC, people still expect you to have one. Apple does – the iPad technically (marketing???) shouldn’t be able to live without it. And yet mine does. Am I wrong for pushing, or is the definition of what is a PC not yet adapted to personal computing?