People don’t ”like the flavor”; rather, they tend to misattribute to flavor the craving they have for the neuropsychiatric state produced by their substance of choice.
In your case, both the taste and effects are produced by certain monoamine oxidase inhibitors (Harmala alkaloids) created in pyrolysis of L-tryptophan during the roasting and brewing of coffee.
It turns the conversation upside down and makes the other person sound like a junkie.