I am fortunate to have an open schedule. As I go to work, I set my own hours. I don't mind, in my reality I'm on call 24/7/365.2422. That said, if I want to linger somewhere to take a photograph, I will allow it as it's just another part of my workday. I take images. It's my life's calling.
I was born with the ability to see, both the obvious and the less visible. I say it as a fact, for each of us have different talents. To this end I have carried a camera or recording device, nearly my full life. It is only necessary to change the priorities to take the time, and make the effort. The other day, I again stopped to record a family scene, not for me, but for them. I have seen enough life to know how fleeting it might be and can only imagine what the future might bring for them. What I did was allow a memory to last, and bring this reminder, every time my photograph will be viewed.
Very soon I will seek them out and present this gift to them. It is also a gift to me, by sharing it with them it also includes me.
The point is without the camera, how could I do this. Some might mention their phones, but they are still so limited with camera angle and detail, I wouldn't have been able to take this image, unless I altered it by getting in too close then changing the whole feel. Sometimes documentary photography is best done by not interfering.