1. Do you believe god exists? Why or why not?
I believe that there is some form of omnipowerful entity in existence, yes. This is for one very specific reason, quantum uncertainty.
As explained in this video, the electrons and quarks, protons and neutrons, etc that make up our universe, are impossible to predict. They will appear (and in some cases, disappear) completely randomly. If you make up every single one of these combinations of outcomes, you have everything that ever has happened and everything that ever could happen. In my opinion, whatever is controlling this is 'god', as it has the power to control the entire universe.
2. What is faith?
Faith is believing that something is true or factual.
3. What has led you to believe or to doubt? Why?
I believe that there is a god because in my opinion, the evidence I've brought makes sense. Until science finds out how the randomness of the interactions of quantum particles work and how to control it, my beliefs are firmly held.
4. What makes your life meaningful/worthwhile?
The only thing I live for is to make others lives and my own as good as it can possibly be.