> "The lead founder of the company sends emails at all hours of the night, even 3 or 4AM and talks about how little sleep he is getting like it is a badge of honor."
and seeing how it connected to your original posting:
"Hi HN, I left a job at a respectable corporation to
join a YC startup "
I don't get it. YC doesn't guarantee success. From what I read, YC gets the pick of the litter, the rejects either raise money from others or bootstrap or just go back to the workforce. The same thing happens even if you are in YC...You made a decision to leave a stable job to join a YC startup. You realize the founder is not letting you sleep or has some weird ego about being poorly productive (no sleep means you aren't performing 100%), and now you are questioning if you made the right choice, and it seems like you have every right to question your decision based on the environment you are currently in.
A normal and healthy working environment (YC or being a startup is no excuse) doesn't have people sending emails at 4AM and expecting people to read their bragging rights on how shitty their work output will be throughout tomorrow because they didn't sleep. IF I WAS AN INVESTOR AND THIS IS HOW PEOPLE WERE BURNING MY MONEY I WOULD BE FUCKING LIVID AND IMMEDIATELY FIRE WHOEVER IS RUNNING YOUR COMPANY.