At any age, life is just too precious to waste even a moment putting off the proven standard medical treatment. You can still do the healthy lifestyle changes, but these will not kill the cancer and you will not be "singing and laughing" for very long. When you say that "Hope. . . can often be buried by knowledge" I have to disagree. Knowledge, especially the knowledge found on this site from the caring individuals who have been where you are, actually brings the hope so necessary for survival. Re longevity stats comparing treatment versus non-treatment, the reason that googling did not bring results is because the non-treated individuals did not live long enough to talk about it. If you really want to survive this, listen to your docs.