Vulnerability is not a weakness, a passing indisposition, or something we can arrange to do without, vulnerability is not a choice, vulnerability is the underlying, ever present and abiding undercurrent of our natural state. To run from vulnerability is to run from the essence of our nature, the attempt to be invulnerable is the vain attempt to become something we are not and most especially, to close off our understanding of the grief of others.
I believe that works that touch the Divine or teach us or are still with us centuries after their creation are the ones that did not come out of a place of power or control or techniques, but came at the moment when the heart let go and God answered the question.