First of all, there are infinite past events before we are born. But assuming chaos theory, let's say every little thing did add up to a pattern that could be predicted. Yet so many different things happened leading to the events of your birth that one little interruption to the flow could have ended your probability of existence forever...
Lets travel to the point where your parents met. How many factors could have conspired against their eventual coupling? Many. Yet they met anyway - and you started out as a mere sperm, manufactured in your father, containing the information needed to develop into the full human that you are today...
Sperm can only live 30 days inside the testes, so you didn't have long. Luckily conception did take place, but then you had to beat the other 200-600 million sperm (if your father was fertile) from getting to that egg. This is probably the single most greatest event for all of us life forms - the biggest most monumental hurdle that we ever have to face...
(Of course there are many other hurdles, which I won't go into)
So you're conceived - but then you have to face the risk of not even being born alive. If you are in Sudan you have a total: 65.59/1,000 risk of infant mortality. If you are in France it is 4.37/1,000.
So it is an immense achievement to be born, and I commend every human for surviving those odds.
This of course leads on to all of the other threats to life that are mentioned in this section of the Imminst forums, but I'd just thought I'd mention that YOUR MERE EXISTENCE IS ONE GREAT MIRACLE IN ITSELF. Your survival from then on seems small by comparison. [":)]