Because I can still make a lot of money as an employee, participate in the company stock purchase plan (shares that have an actual $ value), take advantage of the generous medical/dental benefits package and work on my own business on evenings and weekends. Mmmm. Having cake and eating it. Or maybe I'm wrong and the only way to be successful these days is to be self employed? I mean absolutely no disrespect to entrepreneurs, it certainly is an awesome path to success, but it's not the only one.

Because sometimes there's more to life than a startup.

Because I don't like dealing with the business side much.

My family needs really great health insurance (USA, where job and health care go hand-in-hand).