Its a very simple logic. No matter how unsignificant the chance of the universe + intelligent life being created was, it was a matter of fact that it must have happened, otherwise we wouldnt be discussing about this. The universe is created in the moment there is life. A universe that isnt noticed by anyone does not exist. And because time is relative to the viewer, all the time of the universe where there was no living being was _nothing_, pushing the chance for life to form until it finally happened.