Its different for everyone. I didn't even get my car at first with the intent to get into drifting, but after experiencing and participating in a few street drift sessions, I have become attatched. Not because it seems to be the hot new trend among young car enthusiasts, its because I've always held a genuine interest to increase my driving skill.
So, in addition to pushing myself harder each time I run through some twisties on certain barren roads, I've also pressured myself to find ways to control the car under other conditions as well (i.e. loss of traction-->drifting).
Talk is cheap, everyone can talk. Not everyone is going out there and learning though, so for those who are (like myself) you've already proven your legitimacy, now all that is left is improve improve improve...
__________________

7! pints of ale out the window sill
when I get my fill I'm chilly chill