There is always one question that comes prominently forward in my mind every time I hear these super-cynical, bitter, nihilistic types talking about how worthless, pointless, purposeless, and meaningless life is and that it's all just a big waste of time, and that question is "then why are you still here?". I don't think they ever completely believe half the crap they spew; I suspect they are just rationalizing to suppress their own feelings of failure to define their own purpose in life and to find their own happiness.