A friend of mine in a similar situation is making a game with his kid - he writes code while his child is drawing sprites. They collaborate on the game mechanics, testing, etc. That works for him and (he says) it's quality time that's loads of fun. Maybe you could include your kids?
There is always time. Though I admit that with the baby now I have to get more creative. But they do have to sleep at some point don't they? :P