I believe that Free Will is something to live by, whether it exists or not.
There was a movie I watched a few years back called Waking Life. In the film, there is a scene where the protagonist visits Eamonn Healy, a chemistry professor. Professor Healy is on a rant about how everything in the universe down to its finest particle is a chemical taking part in a massive reaction.
This scene set off a trigger in me and for the next few weeks, my mind is running circles around this theory.
I had personal thoughts where everything has a 100% chance of happening, just you don't know the state of the outcome until it has happened. The reaction theory aligned with those but it was questioning things on a much larger scale and brought up even larger thoughts:
If it is true, then my writing and your reading of this article are required to happen.
If it is true and we are able to observe the state of all things, then we can predict the outcome of everything at any given future time.
Eventually, I broke out it the vicious cycle. I concluded: