I was once at a startup that did well enough at Demo, they wanted to launch without a proper ops team in place (it was a service). In addition to demands, lack of planning, and poor management -- there was an expectation that people work unreasonable hours. Taking a weekend off without proper genuflection was frowned upon. Multiple people walked before their 1 year cliff was up, other people stayed.

Working hard isn't an issue, but expectations like those in the gaming industry or some startups (like the one I encountered) are unreasonable and it would help if more people voted with their feet. That said, I know a lot of people in gaming have a passion for such.