30 year old dad of a 2 year old. I did software dev fulltime for 3 years then a consultant for the last 5. Having the flexibility to be at my kid's doctor appointments and go to the park on a weekday is cool. But I pay for it with either not getting things done or staying up way too late and killing myself. I'm just now starting a more traditional 9-5 schedule (still as a consultant) and I'm hoping that will translate into less stress with being able to work and be a parent and take care of myself. There's hopefully always a happy medium for anybody but it depends on what your priorities are. I definitely noticed a change in my childs behavior when I stopped spending every night in the basement working and learning. Even if it was only for 30 minutes at a time. But obviously my ability to be "in the zone" for hours after billing time was over changed too. But it matters to me, so that's why I do it.