If nothing else, he kind of slipped in the 'people desire'. Why is that a requirement for a passion? As in, why is the requirement that one should be making it for other people? E.g. what if you are really into scuba diving?
Because that is the premise in pdog's comment which you were refuting as misguided.
You are free to do whatever you want (and not what other people desire) if you are self sufficient enough to not need anything from others (highly unlikely).
