As to motivation – I am not a theist. To channel Groucho, I wouldn’t belong to a group that would have me as a member. But my self-study of intelligent design, including cosmology, has nailed down my deism).
According to celebrity physicists Stephen Hawking and Lawrence Krauss humanity is luckier than my beating a healthy Tiger over 18 holes. They assert that the Universe is undirected and purposeless. This is one of two early- to mid-twentieth-century axioms. The other was an infinite Universe. But the infinite part started falling away in 1917 when Einstein’s calculations showed him the universe was collapsing onto itself (therefore not infinite) causing him to falsely create a fudge-factor, adding a cosmological constant (anti-gravity factor) that kept infinity in play. After a lot of intrigue, Einstein officially admitted his trickery in 1929. As a sign of cosmic- serendipity, physicists concluded in 1998 that this constant was indeed needed, but this time supported by the data.
This constant is one of many (~ 34) that combine with the vast math/physics’ laws. One slight variance from any of these and there are no galaxies, stars, planets, earth or you. With apologies to most cosmologists, it is as certain that you (the reader) exist as it is that the Universe has purpose. Many leading cosmologists begrudgingly, sort-of admit (with feet shuffling and throat clearing) that “there is now broad agreement among physicists and cosmologists that the Universe is in several (sic) respects ‘fine-tuned’ for life” (physicists Paul Davies), then comes the “however…”: But this “broad agreement” is as solid as vapor.
Their Harlem Globetrotter hide-the-fine-tuned Universe tricks, makes researching this topic for a novice (me) like Mr. Magoo finding the right bathroom at night in a Donald Trump house. Instead of a reasonably direct line from: nothing-to-everything in a split second (Big-Bang); expansion; formation of stars; galaxies forming; death of stars; solar systems; earth; and finally humans, I had to wade through: but for the grace of undirected fortune, carbon-based humans would be silicon-based boobs in a different galaxy: singularity-did-it, bubble universes; string-theory: M theory, multi-universes: dark matter; Higgs boson; inflation; g-spot (just kidding) etc. Hawking, Krauss et al. really want don’t want us to make the obvious connection between a cosmos-from-nothing to sentient humans figuring out the math/physics of the universe at the exact place and time to do this. (Our position in the Universe is ideal for observation and much earlier or later we couldn’t see back to the beginning).
Separating the wheat-from-the-chaff became easy with some experience. The chaff comes from the atheism-or-materialism-as-an-ideology crowd (both scientific based and whackos), new-earth Christians and cosmologists proselytizing their special hypothesis. The most informative are thoughtful / reasonable Christian sites. For me, the most helpful is a Catholic site with a specific science/cosmology section http://www.strangenotions.com/science/cosmology/ whose contributors are truly experts, some who challenge the “company line” that generates stimulating debate. I especially like the often skillful and insightful comments (lots of them). This site is involved in a bit of a dust-up over banning and deleting hard-core and vicious atheist comments. Bully for them!