What Does It Take to be an Audiophile?

What are the defining characteristics of an audiophile? The term gets used a lot, but there seem to be a lot of different meanings as it gets used and it often leaves me wondering exactly who is being referred to by the term. So, which of the following characteristics are most important and which are least (including irrelevant) with respect to being a card-carrying audiophile:

Amount of time per week (or month) spent listening to music.

Amount of time per week (or month) spent exclusively listening to music on a dedicated "high-end" system.

Cost of the person's system. Would this be as a ratio of yearly income, an absolute amount or some other measure?

An attained skill level at listening differentiation in the music recreation process.

Size of the person's software library.

Appreciation of certain forms of music. Is it possible to be an audiophile who listens to 90% classic rock and the rest heavy metal?

Attendance of live music performance.

Ability to play an instrument personally

Amount of time spent on equipment research and experimentation in the pursuit of better music recreation.

Amount of space dedicated to the pursuit of music recreation in the person's home.

I'm sure there are others - I'd love to hear them, as well as your opinions on which of the above are the most important, which are unimportant. There are many threads where I think a more common understanding of this term would aid the conversation. -Kirk