Do you think that what happened to us was going to happen to us anyway or is the future unknown?
Some thinkers are determinists and think that due to causal relations what happens is the only thing that could have happened based on what has happened in the past.
I am personally skeptical about counterfactuals which are claims made about what could have happened or what would have happened if such and such.
Could we have led completely different lives? How much control do we have?
Science uses predictions as do other fields and humans in making every day decisions which is based on an assessment of probability.
How ever there are so called "Black swan" events like 9/11 that were very unpredictable and surprising.