Your the one that doesn't seem to have read the thread. You chose to start a business that would involve a lot of work and now seem to want to use that to argue against anyone else looking into self employment as a means of more freedom and less time at work. You admit you did it because it provided you with a sense of personal fulfillment. But the original poster was looking to find a job with less hours so he could be fulfilled with his family so clearly a lot of hours job would not be his goal.

The entire story is completely irrelevant OP's complaint and serves only so you can recommend 'finding your passion' and suggest that working for yourself will mean more hours when that is not at all the case in most if not all self employment situations.

Same with this one.. what are we going to do go down the entire list of things which may involve more than 40 hours? Clearly if people are doing this it is worth it to them for personal / financial reasons. But me and the OP don't share that view and think it is crazy that everyone is forced to work 40 hours no matter what the profession or need.