I'm not at all one to put any stock in religious beliefs, but this line of thought reminded me of a quote by Sister Joan Chittister (a Catholic nun), and I thought it, too, belonged here.
"I do not believe that just because you're opposed to abortion, that that makes you pro-life. In fact, I think in many cases, your morality is deeply lacking if all you want is a child born but not a child fed, not a child educated, not a child housed. And why would I think that you don't? Because you don't want any tax money to go there. That's not pro-life. That's pro-birth. We need a much broader conversation on what the morality of pro-life is."
Of course, I would extend that to include "a child healthy", too, despite not being pro-life at all. What you are engaging in, Hunter, is a mental gymnastics argument that conflates should and is. Clearly, not everyone is healthy. Otherwise, this line of discussion would be extremely pointless. The question is whether we should do what we can to ensure as many people are healthy as possible, knowing that we'll never be able to protect them all.
Plenty of the Constitution's so-called "unalienable" rights have been denied before. Take slavery as an example. Plenty of people were robbed of their freedom. How is this possible? Because that right is, in fact, alienable. There's no point in defending rights that literally cannot be taken away. Unless you think Jefferson was a complete idiot, it follows, then, that he must have meant something else. Such as defending rights that should not be taken away.
Besides, you're going to have to do a lot better than quote some old document to convince the kinder ones among us to let people die of horrible diseases without lifting a finger.
If we go by your insipid definition of life - "existing as an organism" - then I guess we're all pro-life. After all, a fetus has to be a living thing before we can kill it. Since, apparently, all you want to protect is the right to a moment of existence, that should be plenty, right?