[rbanffy]

Working excessively long hours has obvious negative impacts on a programmer's performance. If you do it constantly, instead of being considered a hero you should be considered a liability. Would you board a plane with a pilot who flies, say, 300 hours a month

I am fine with chasing a bug for hours every once and then or to extend your schedule when your muse pays you a visit, but if you do it so frequently that it starts impacting your performance negatively, you should stop out of consideration for your colleagues.