A startup is a temporary organization searching for a repeatable and scalable business model. Speed and agility are your only advantages. Working all the time is practically essential for most startups. Are we seriously saying that startups should be comfortable 9 to 5 jobs? There are hundreds of millions of jobs out there that will give you that lifestyle, why complain about that exception where it is actually sensible? Or have we repurposed the word "startup" to mean small business?
Are you sure? Having experts in a given field isn't an advantage to look for? The mere fact that you're able to turn on a dime if necessary without having to reorganise thousands of employees and projects towards your new goal?
If your definition of "startup" includes "doing things that literally anybody else with enough money could do" and "trying to establish a monopoly at all costs", speed and agility are things you need. Unfortunately, that's the definition that most of SV seem to use. But if you're trying to push boundaries and do something new with experts in your chosen field? Not so much.
Really depends on how much distance that expertise leaves between you and your competition. If it's enough of a barrier to entry, then yes you have time, otherwise you better be going fast. A better funded competitor might Uber you after that first MVP has been derisked.
1) It gives you time to reflect on whether the direction you are going makes sense and is aligned with others.
2) It gives you time to sleep and exercise, which makes you more focused and effective at work.
3) It removes the illusion that you can ignore planning/reflection and just pour more hours into something in order to make it successful.
4) If you are demanding people work really bad hours as a matter of course, then that scares experienced hands away. Given that most employees won't see any payout from an exit, those with experience will demand to be paid in cash and will demand that much more if you expect long hours.
> It removes the illusion that you can ignore planning/reflection and just pour more hours into something in order to make it successful.
It took me too many years in the industry to figure this out. When I'm in "get it done" mode spanning consecutive long days, I do not think calmly or clearly enough to recognize the opportunities along the way that I could have taken to achieve my goal faster/better. Since realizing this, I cannot count how many times I have come in the next morning with new and better ideas and approaches after reflecting on the previous day's sprint during my own, calm, personal time.