For every peer putting in stupid hours innovating, building and learning there are > 1 peers putting in stupid hours fixing errors of other overworked colleagues or just grinding through the stuff they could have done in 40 hours if they didn't have an asshole boss / broken business culture.
http://www.igda.org/why-crunch-modes-doesnt-work-six-lessons
1. Meetings
2. Someone upstream not doing their job.
#2 is far worse than #1 (and directly related to the parent's #1). There is truly nothing worse than a project manager who allows requirements to be delivered late, but doesn't push out the deadline for the entire project.He and you do your day job in 8 hrs. But he puts in an additional 5-6 hours a day and is likely to put for the coming years.
Now suddenly you will find yourself in a corner as he will grow(in comparison) inevitably. And there will be little you can do.
Putting in crazy hours isn't mandatory, but neither is winning and succeeding.
I completely fail to see the inevitability. People don't fall into a coma the minute they leave the office. If he's grinding away 5-6 hours extra hours alone in the office every day, while you're spending those 5-6 hours meeting new people, hanging out with friends and colleagues, learning new things and playing around with fun hobbies and projects, why should he grow more than you.
It's just as likely that two-three years down the road he'll be completely burnt out with a stagnant skill-set while you have a great network, varied skill-set, plenty of energy and are ready and able to use those to move onto bigger and better things.
Besides you can train your biological cycle to do wonders.
Edit: If it's the money you're after I think you should try to work smarter not harder :-) i.e. if you're only way to get more money is to work more hours maybe you should find another job or change career.
So as long as you are happy with whatever you do, you are the happiest man in the universe.
And I have no problems with this.
I have problems with people who stop other people from working hard, just because they don't want to.
For every person who wants to go back home, there is always a peer who is putting in extra hours innovating, building and learning. By the well known rate of success coming at an near exponential rate to people to work hard and are productive, the rate becomes exponential if they add crazy work hours to it.
Building stuff requires a goal. Then implementation, experimentation, test a feed back loop and then back to implementation. And then this cycle goes on in iteration.
This requires tuits(Uninterrupted large workable free chunks of time) to allow a degree of focus and flow seep into the person. And most of tuits are generally available only early in the morning or in the night. This by default means you already agree to work crazy hours.
So in summary, I can't do a 40 hour work week because