statistically, working for a startup is about the worst thing an otherwise intelligent person could do for his health and financial well-being. Unless of course by working for a startup, you mean owning the startup and conning 25 year olds into taking 30% under-market pay for 80 hours a week for 0.25% equity while you prep for a sale that will make yourself and the VCs rich while not even making up for what your employees would have made had they worked those hours at market rate...