As of now, I support the theory of evolution. I am from the USA.
However, I am not sure if it is the final solution to the question, I do know it is the most well supported and potentially factual solution to the problem that we humans have been able to derive.
However, I would like to make a note that their is a difference between a scientific theory and a normal theory. I think it should be noted that Evolution is a scientific theory and Intelligent Design is simply a theory. To me, and many others, that is quite a difference.