I point out that life is an act of war because it helps me to dispel insuperable and irrational speculation regarding spirituality.
The question is, why do you want to dispel them? If you delete the word "irrational" before the word "speculations" and instead of "speculations" speak of "worldviews", the tone of the statement changes, no?
The rejection of the spiritual on the basis of an assumed irrationality involves an exclusion up to the point of offending all those who perhaps do not want to prove such a thing, but do want to accept it in the certainty that they are reaching the limits of their understanding. If the rejection remains mutual, both world views lose meaning and do not contribute to finding peace in the mind.
It would be easier for me not to see a contradiction in what you say in the following, which for me still exists in your elaboration.
I believe life is sacred, and humanity specially so. I have spiritual beliefs and understanding, but there is little empirical evidence I could point to in support of such belief. Because of the limitations on scientific evidence, spiritual beliefs are difficult to rectify with supporting evidence that reasonable people can agree on, and such disagreements as arise from that circumstance are all too common and prevent agreements on matters that can be supported by evidence. It is not my intention to dismiss spirituality itself as irrational and insuperable, but spiritual beliefs occasionally drive people to reject reasonable and fact based understanding because of the strongly held nature of spiritual beliefs.
I note my belief life is sacred exceeds the limits of my actual understanding, which is a very small realm because we are quite limited in our ability to perceive reality, at least. If I can only reach agreement with that subset of people that completely agree with my spiritual beliefs, I will forever be in disagreement with all of humanity.
We can all agree on some very general and reasonable things, that people of utterly disparate spiritual beliefs can all work to achieve for our mutual benefit, despite that various spiritual traditions cannot be reconciled and today prevent people from working together, such as Hindus and Muslims in Kashmir. I seek to foster agreement on things that reasonable people can agree on evidence for, and can work together towards mutual goals based on such agreement, rather than splintering our number and preventing us from surmounting our mutual challenges by supporting each other.