He was telling me about his startup ambitions and about one particular business that he said sounded like a ton of fun (it was an alcoholic beverage business) - he loved the lifestyle potential of being "that guy".
I told him a story about how I wanted to be an EMS worker when I was 12 years old. Why? For a single, simple reason -- I thought it was _extremely_ cool to be able to drive around with lights and sirens blaring, blasting through traffic. That was it.
Then a family friend who actually was an EMS worker told me one day what the job was actually like - sure, for about 10 minutes you were driving like a madman through traffic, but the rest of the time you had to, you know, actually BE an EMS worker :)
And the same goes for startup life -- you have to actually BE a startup founder for 99% of the time. Don't get caught up by the lights and sirens.