Faith is the root of all Proof 

If we can only please God through faith, then why is that? Is it to require each of us to make our own decision? It was earlier pointed out, more elaborately, that absolute proof is not possible with various witnesses all from various respectives, influenced by different times as is usual in all seen situations, unlike unseen situations. 

And then too, we know that knowledge is too much for us and as we gain knowledge we also gain the knowledge that there is even far more that we do not know than we already know. So knowledge of our ignorance grows faster than our knowledge of what we know. Then to top things off, the known does not always remain the same, as other conditions inexplicably appear in seen situations by the different times, causing even more variabilities to puzzle us further. 

I think it is to stretch our spirit and gain for us more control over our spirit power to strengthen our existence. Existence, in order not to negate itself,  is itself good but we do not appear to be making our nation any better. God has been known to interfere but I would hesitate to explore those possibilities. Such is the case when I get too far afield.