Thought-provoking line I just read in a news article:
I am not smart enough to argue with those that cling to disbelief. Centuries of philosophers have made better arguments than I could, and I am comfortable with just pointing in their direction if an acquaintance insists, “If there is a God, then why [insert atrocity]?†For me, belief didn’t come after I had the answer to that question. Belief came when I stopped needing the answer.
From Why I’m Coming Out as a Christian by AnaMarie Cox.
Every human has probably asked the so-called ultimate questions, “Why are we here?”, and “Why does God allow suffering?”, “Why doesn’t God show him/herself?”
When we stop needing the answer — ’cause we’re simply never gonna get the answer – is the only time we can relax and just believe, just get to work. Some “believers” become spiritual workers. They work as a spiritual guide and/or spiritual helper for others. Some “believers” are quiet advocates working behind the scenes thru prayer and meditation. Others do nothing other than live their life as an example of how allowing your spiritual side to develop brings ultimate happiness in life.
Why be spiritually retarded? You work on your mental and physical self, why ignore the other third, the spiritual? I think a lot depends on how a person is wired. Some people naturally gravitate toward developing their spiritual third just like many athletes develop their body first and foremost, and scientists develop their mind / mental capacity more.  Most people I work with in my field of religion and spirituality are spiritual-mental dominant with their physical health and fitness, developing their body, coming third. A few are mental-spiritual dominant instead of spiritual-mental (with the physical coming third). Of course we all know many people who are physical-mental dominant or mental-physical with their spiritual third coming in last. That is the great majority of humanity, I think.  I have not yet met anyone who perfectly balances all three.
I’ve heard that Tibet is the most spiritual “country” in the world. Tibet has the highest concentration of ordinary people devoting their lives to religious life, becoming priests and nuns. I put country in quotes since China annexed them and Tibet sadly no longer exists, but that’s another story.