John O'L - it's possible that any reason for your survival has already happened but you just aren't aware of it.

We touch many people in many different ways as we go through our lives and it could be that some, to you, insignificant event was a turning point to someone else. Maybe that is yet to happen. Maybe there is no reason for your survival other than Irich luck.

For myself,I live life without worrying about why I'm here and what is my purpose. I just try to appreciate the world around me and the people I am in contact with.