That's a fallacy you're constructing. I have known persons who are into nihilism and they would argue the same that nothing matters with free will. I don't believe the exchange was meaningless because my friend will be reading these replies and have more experience in conversing with doctors. She get's similar responses to what you convey when arguing her position. Btw if you're downvoting my responses on an other account. You're extremely childish if so. The only reason I assume this is the case because the other is reply old enough to where I assume it's the case. People are not supposed to be using the downvoting system in a childish manner is what I believe is true for hackernews.