Intellectual understanding is never the answer to many things.  It has its usefulness but should not be over stated.

The objective of the Robin is to fly, not to understand its own flight mechanism. 

This is where life becomes intricate. We have evolved an ability to understand things intellectually. It is useful but perhaps we are over doing it. Intellectual understanding can become an obsessive need just like other needs.  

Spirituality and religions try to wean us away from too much of intellectualism.