I have a similar anecdote. I have no appetite for coffee anymore. I've also got very little appetite for alcohol. I think in someways I was self-medicating with coffee/tea, which in turn, was causing me to self-medicate with alcohol/marijuana to sleep.

In my opinion, anyone claiming that it's a "personality trait" or a made up condition is a moron. It's absolutely turned my life around. After getting my dosage lined up correctly I feel as if I'm finally living normal.