Tenacious, perhaps you cling to God as if there is some mystical paternalistic force that however bad things get... you will make it to safety?
Here
is the crunch point as every atheist knows; we have only our self to rely on. This
might be hurtful to contemplate for the first time having believed in God but ultimately...
and unlike children... we are all alone.
Realising this is the reason we could experience anxiety in letting go of our
deeply cherished notion. However a great freedom and expansion of our horizons
begins once we take control and responsibility for our own lives.
The concept of God is a primitive myth which answered every question asked back in those days at the cradle of humanity. Times have changed and we have mainly resorted to knowledge to guide us rather than superstition. For the individual this is the big leap; to become our own person, not superstitious, not dependent, determining our own will and discovering the practical and testable answers to those things we once thought were magical. If we believe in a god we are condemned to be forever children and beholden.
Like the Borg, it is certainly in the financial and power interests of religious bodies to gather individuals who remain infantilised and compliant in their fear and sense of obligation to an invisible and unprovable deity.
You asked how did we individually become godless? As for me it was as diogenesister suggests; reading philosophy. As a JW and pioneering I had realised that the figure of Satan was a crude theatrical device and later the idea of God began to appear shaky but it was reading Kierkegaard (a theist) and Nietzsche (an atheist) which rapidly dissolved my belief in a god. As a suggestion; do start with a primer in the subject should you be interested. For me one of the most useful and absorbing books ever written is Bertrand Russell’s History of Western Philosophy (long but easy to read!)