Why do most of those organs fail? Because of cancer-inducing radiation from everything with a computer chip in it, disease-inducing food habits propagated by the media, long term effects of the lack of proper healthcare by governmental agencies supposed to invest in these sectors using tax money, industrial pollution, agriculture filled with toxic chemistry... The list goes on.
I do not believe the reason why organs fail is radiation from everything with a radiation chip in it. The reasons why we see more cancer compared to the past are way simpler. First off, we got much better at actually finding cancer. But mostly, the reason (IMHO) is the fact that people get to live through diseases that in the past would have been lethal.
Apart from obesity, I do not see a disease that would be promoted through the media - adds for - especially - fast foods are bad, yes, but otherwise we haven't even in the past been eating more healthier.
In terms of industrial pollution - yes obviously, we need to fix our ways there. I do not think there is a single person who would disagree that ideally, we need to take care of the environment.
And toxic chemistry in our foods? Some pesticides are toxic sure, but it all depends on a single fact - can you save more lives from starvation or from not using toxic pesticides. If the answer is more people would die if we didn't use them rather than more people would die if we used them - I would argue they do more good than bad.
These lives only need saving because of other pieces of technology known to cause harm. Other species suffering because of the damage we do to ourselves? That's stupid, specially when those sources of human-to-human damage only don't get dismantled because they are profitable.
There are plenty of other reasons than just other technologies causing harm. What about someone that gets, for example, stabbed? He might need a new lung or a new lung could make his life better. Or if I were to take out humans out of the equation altogether, how about a person who will get some kind of illness caused by a bacteria that will make his stomach be in constant pain - doesn't he deserve a transplant?
RE: Humanized Pigs As Organ Donors