Typically, the lifestyle pictures are my favorite. Capturing kids, being just that. Kids. You can see their personalities. And that is my absolute favorite thing to capture. This is why I typically tell the parents of my clients. "It's okay if they don't look at my camera" or "No need to coach them, we got this."
And when doing so, sometimes you strike Photography Gold.
(No, I did not photoshop their eyelashes. And no, they don't have mascara on.
They have the longest and darkest eyelashes. Ever.)
Or sometimes, you do get everyone to look at the camera. And while their expressions, may not be what you thought you want. When you look back, it just screams "Them". And really, don't you want to capture your favorite things about your children, or clients? That is my favorite thing about photography. Looking back over the pictures I take, and seeing the reflection of their personality shine through.