SAHD: You still will die.
Sometime.
You will age.
You will be vulnerable to bacterial infection, illness.
You took no control from natural at all, you are kidding yourself thinking you (or we as a species) have taken that control from nature.
She is still very much in control and it is sad that you think a few technological advancements will take that ultimate control away from the very environment that sustains you and birthed you. It has existed longer than you me the whole human race and will continue to exist long after we have destroyed ourselves.
I am happy to shuffle off this mortal coil when the time is right, I have lived a good life. I do worry for my family though, so I do my best not to die generally!! I have seen people die in front of me, I'm not afraid of this. I have seen a lot of suffering though, and that is vastly different.

I very much assume that you aren't a cruel person and that you have the very best of intentions.

I defy you to go to Africa and tell me that your happy to take on their disease burden. I defy you to look into someones eyes who is dying a painful and useless death of a preventable disease in a mud and grass hut and tell them that this is nature, its how it's always has been and will be.

I have been in that hut, and looked into those eyes. I would do anything to take that pain away.

Now I'm the emotional parent?