Anecdata: Once I started ADHD treatment I went from drinking 5-6+ pints of builder's tea[1] one after another into the afternoon, to one, maybe two, in the morning.

1. https://en.wikipedia.org/wiki/Builder's_tea

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.