I think everyone in the company, at an early stage, should have a mindset of ensuring things are getting done, rather then working X number of hours. It should never be about the number of hours your working - some weeks it may be 100 hours, then some weeks it may be 30 hours. It should always be about building a great company and finding those people that are passionate about the same, family or not.
Also, it is discrimination to actually not accept candidates based on whether they have kids or not. We never ask family/personal related questions in our interviews, as it is against the law to do so.
Still think the Spotify model is a lot better in terms of sharing and finding new music people are listening too.. Seems like I still have to pay for my individual songs on iTunes, which I think is a dieing breed.