I have always understood utopia as a term to describe the idea of a society that is so idealistic that is sounds unlikely to be reached but not necessarily impossible.

The problem with the word Utopia is that most people use it for things that they don't understand and don't care to understand, assuming then that the idea they are rejecting is too unrealistic (too idealistic) to be possible to obtain.

But people fail to understand that the idealistic (or utopian ideas) are important to guides us towards a direction and discover things that we are capable to do that previous seemed impossible, inspired and dedicated by our ideals.