I will give this guy a lot of credit for honesty. It's tempting to pretend that starting a company is something you are doing solely to provide a better life for others, when the truth is it is just as often, if not more so, for the self-actualization need of the founder.
From the wife/kid's perspective - they want you to be happy, but they also want you to be present and engaged. From that perspective, what you do to make the money isn't so important as the fact that you can provide, and be part of the fun.
"believing that this is the great sacrifice I must make, the choice I took upon myself for the betterment of the family, for you, but I know that’s not entirely true A little or a lot, it’s for me This addiction or obsession I seem to have with work"