In my experience, long hours and death marches are a sign of inept management, or unrealistic goals, both being very bad for long term company health. I've had

In my experience, long hours and death marches are a sign of inept management, or unrealistic goals, both being very bad for long term company health. I've had all-nighters, 7-day weeks, and death marches, but those were the exception, the result of unplanned, temporary circumstances. The norm was 5 days, engineering shouldn't be a sweat shop.