How very sad. I am happy your little guy was able to help you and that you are okay.
I have to agree that many just don't want to involve themselves and that is way I make it a point to try to help out others as I would want them to help me if I was in need. I live in a retirement area (Palm Springs) and I have seen things from people not holding doors open for people that can't even open them to people watching as a elderly woman fell on the floor and bumped her head.