I'm not sure if this was the intention of your comment, but I get the general sense whenever this subject pops up on HN that you aren't really doing your best if you aspire to a regular 9-5 workweek. Nothing could be further from the truth - I am a very ambitious guy, but I will refuse to work longer weeks unless it is absolutely necessary. And if so, only for a limited amount of time. Violating this will literally ruin my mental health. I am not the only person who works this way.