Intellectually I know we don't have enough donations to match the demand and in my own life I've given blood and signed up to be an organ donor, but there is something across species like this that just makes my stomach kinda turn.
As someone who had to wait painfully long for a transplant, I would have much preferred a pig organ sooner (and possibly of higher quality).
At the same time though, if it were meant to be a temporary life-saving procedure to keep you at optimal health for as long as possible then it makes more sense. I would feel a similar (if less-alien) feeling about having a deceased person's kidney in me as well, after all.
I hope I am fortunate enough to never have to make that decision while still living a long and fruitful life.
[1] https://en.wikipedia.org/wiki/Organ_harvesting_from_Falun_Go...
Visceral reactions are quite common. How about stories and notions of rape, murder, infanticide, and slavery?
Maybe they could even use my own cells to make the organ. Then it's just my kidney 2.0. That's much easier to digest mentally.
That being said, I'm for finding medical advancements that will extend and improve human life, even if that advancement comes from animal organs (at least temporarily). For me the goal is to decrease suffering. I can deal with a little revulsion to the method as for me the end definitely justifies the means.