Be it your first hi-fi 'phones, your first lossless-music experience, or a friend: How did you become an audiophile?
For me it was a personal thing: I realized one day that my iBuds just weren't cutting it anymore. After moving up to a better, but still low-fi headphone, I figured out that this is the way to go. Got some M50's recently, which even if they aren't the best, are loads better than any other headphone for the price. Then I listened to some FLAC's, and I think my ears melted for the first time.
What about you?
(This might be in the wrong place, but I couldn't really see a better-fitting forum. :/)