I'm onto my fourth start-up, third as CTO, and let me tell you start-ups are no walk in the park. The idea that there's even walking involved is so far off what it's really like. It's non-stop sprinting and if it's not, then you're not doing it right and moving too slow. I like the idea of a work/life balance, but when you have to build every little part of a business, it's just not reasonable to get obstinate about it. When and if I make it, I'll be thanking my perseverance.