When I was growing up, pictures were few and far between. I think the reason was my father died when I was 2 and my mother had this deep sadness that was always lurking, hence she never felt enough gumption to smile for real to take a picture.

As an adult now - most photos are staged smile photos(where my eyes look nervous but I'm smiling) except the ones where I'm just with my kids - I feel these are natural relaxed shots.