You know you're an audiophile if--

You judge an amplifier on its current delivery capability, damping factor and input impedance instead of its pretty flashing lights.

If you're beginning to feel like "Red Green"

Your gear sounds great for a few months and then needs to be replaced one piece at a time until you locate the source of the less than pleasing sound you are now hearing.
In many cases, the culprit cannot be found and an entirely new system is born! Sadly, after much turmoil, you wish you had kept your old equipment!

Within days you tell your wife that your system has never sounded better only to counter with but last night i knew hwat could make the system better as you beg her to let you buy xyz device.

You finally finish putting together that perfect system and you already know what you are going to replace each piece of it with in the future!