Perhaps genes did regulate the aging process. Perhaps different organisms had different life spans because a universal regulatory 'clock' was set to run at different speeds in different species.
Just living longer and being sick is the worst. But the idea that you could have fewer diseases, and just have a healthy life and then turn out the lights, that's a good vision to have. And I think what we know about some of these pathways suggests that might be possible.
It's possible that we could change a human gene and double our life span. I don't know if that's true, but we can't rule that out.