You know you're an audiophile if--

1) you own VTL Wotans and love them.
2) you want to get another pair- for biamping.
3) you knock out all the non-loadbearing walls in your home to give your Magnepans the room they really need.
4) All prospective home purchases are evaluated vis-a-vis the potential listening rooms. (I know someone ELSE mentioned it... But I'm going through it too.)
5) You buy two phono preamps (in addition to having a built-in phono stage in one of your preamps) before you have purchased a turntable
6) You have more tube amps than you have fingers.
7) You start building your own gear...
8) Audiogon becomes your porn site of choice!
9) Robert Plant asks you if you know who has the Extended Plinth VPI Aires with the Lyra Cart. that's posting Led Zeppelin Hi-Res MP3's on Torrent and YouTube sites, and you say you don't, but if you find yourself in the fellow's listening room, you promise that the Lyra will have to be shipped to Soundsmith for a new cantilever...

You don't go to live concerts, sit home and listen to
few CDs and/or vinyls that sound perfect as reference for next upgrade or tube-rolling;
each of your component has a dedicated line including iPad;
you enjoy more sound than music or musicians therefore you don't need to explore yourself onto other music except your few CDs of Diana Krall.

You spend $2999.00 for a pair of speakers and tell your wife they cost well under $3000.00, and that price even included shipping.

Plus, you'll sell the old speakers for close to what the new ones cost, so the difference is really only a few dollars.

You give your old stereo components to your (grown) children so you have to buy new stuff! Because you hate the idea of them having to listen to ordinary stuff, apparently. I sleep well at night knowing I have perpetuated the hobby by infecting my son in law with Audiophilia, he's got it bad!

Alpha, one on the most insightful comments I've seen on hear.
I've done it more than once-LOL .