I have two young children too and there's no way I can get to a yoga studio regularly. But truthfully, I'm not sure I'd do that even if I did have the time. I've progressed way farther from this site (and youtube, but primarily this site) than I ever have from a studio. I've never been to a studio where I am where they practice advanced poses.
And now that I've been practicing yoga for over a year now regularly, I know what a really good yoga teacher looks like. And I feel like I'd be hard pressed to find someone with the same skills and knowledge as the instructors on this site, where I could get one on one teaching. In fact I feel like I AM getting one on one teaching with yoga from home.