Working with children can often be a very humbling experience, their character and their innocence is often captured at the briefest of moments.
Having a quick finger on that shutter is often key to getting that one photo that could not be posed for. Children are so unpredictable from what they say to what they do, we have all been one and know how amazing and precious that time was.
Don't you just wish you had more photos, video etc to look back upon to rekindle those memories?