On average, the problem with being an employee in a startup is that actually it is easy to over-value your shares/options. However, there are still lots of cash

On average, the problem with being an employee in a startup is that actually it is easy to over-value your shares/options. However, there are still lots of cash-out stories as well, where the employee has made nice bonus on top. But to me it seems that for each cash-out story, there is like 9 or 10 stories where the options/shares have turned out to be worthless.