A certainly understand Dr. Collins' fascination with the underlying order and elegance of physics, and I sympathize with, if not share, his desire for comforting answers to life's most difficult questions. However, attributing human characteristics such as intelligence to said order, and jumping to the conclusion that the the only story that could possibly explain it all is the belief system that he was raised with as a child (i.e. Christianity) doesn't sound like he performed a very thorough investigation, whatever his profession might be.
In any case, his beliefs are atypical among biological scientists, according to a variety of studies. For example, A 1996 survey conducted by the international weekly science journal Nature found that outright disbelief in God and immortality among National Academy of Sciences biological scientists was 65.2% and 69.0%, respectively, and among National Academy of Sciences physical scientists it was 79.0% and 76.3%. Most of the remaining scientists surveyed were agnostics on both issues, with few believers. The highest percentage of belief was among mathematicians (14.3% in God, 15.0% in immortality), while biological scientists had the lowest rate of belief (5.5% in God, 7.1% in immortality), with physicists and astronomers slightly higher (7.5% in God, 7.5% in immortality).
Here's the link to that report:
Leading Scientists Still Reject God