I had a rough experience as a one-man-show founder of a failed startup. At the time I had two young ones aged 2 and 5.

It's not just a matter of finding the hours to put into the two roles. Fatherhood is spiritually and emotionally demanding. It doesn't come naturally to all of us. I don't think Superman could work full-throttle at a challenging startup and then have much left to give when he gets home.