Most people misunderstand one or more of the following.
These are just a few of the many things that had to be just right for life to be. Intelligent life is a different subject all to itself. Of course this is all based on evolution, which I am not against or for. God created everything. If He used a form of evolution to do some of the work that is fine for me, but to think that out of total chaos a big bang happened and out of that all the right conditions formed in the right way and right place to bring us here is ludicrous.