How can it not be random if there is no intelligence behind it? Don't get me wrong, I'm not trying to prove creationism, I just find holes in both theories, maybe there's a better theory which we haven't discovered yet. *shrugs*
That's because neither theory has been proven yet. We each as people must go with what we believe to be true. There are people who choose a side based on a higher being who can know what they can't and do what they can't and then there is a side that tries to understand how we arrived here, and why. Religious people believe they know were we came from, but very often believe it isn't our place to question why we are here because "God has a plan for us" whereas those who don't believe normally want to know the answers to were humans came from, not necessarily as much why we are here.
In addition, the reason people need to see a higher more intelligent being behind everything they do is simply because people need to feel that their lives have meaning. They want to feel that what they do matters to someone. Most people find it hard to grip onto the fact that there may not be someone out there watching you and everything you do, waiting to reward you after death. As an atheist, I feel that what I do does matter to people, if not to myself, then to those friends and loved ones around me. But I don't need to do everything I do for some being that for all I know doesn't exist. It's a simple need for a reward that keeps people interested in God.