I'm a cancer biologist, so I appreciate the relation to oncogenesis. But you said "It is there for (probably) many reasons". This is what I am contending; aging

I'm a cancer biologist, so I appreciate the relation to oncogenesis. But you said "It is there for (probably) many reasons". This is what I am contending; aging is simply there, because that is what happened. 'Reason' is a judgment we apply, and it's important to appreciate that much of what exists is not driven by anything we might call "reason". I do not believe that the collection of phenomenon we call "aging" is uniformly the product of adaptive consequence. Notably, we die in part because evolution simply doesn't care, or isn't able, to keep us alive indefinitely.