Whether you believe we are here as the result of an accident or you believe a supreme being is responsible, faith is absolutely necessary. It does not, and should not however, have to be a blind faith.
The God that created us gave us the curiosity to want to know how He did it. I also believe that He wants us to harness that information to help enrich our existence here. Many of the world's greatest advances have come through scientists with a theistic background. Science is not anti-faith. In fact, current advances make science a major faith builder.