Xenotransplantation (Animal to human transplants)

The topic was brought up because of a Science assignment i'm doing. The question I ask is why do people think there is some kind of ethical problem with using animal cells, tissue and organs to save human lives? Surely it's just like using a dead humans organs?

Your thoughts?

I guess if a species was going extinct we don't have the luxury of fucking around killing stuff.

i just heard of this recently. seems really cool. personally, i have practically 0 qualms about any science thing. i think any development in science should be celebrated, and not seen as an avenue of "wasting money, time, and resources"

As long as it works, whatever.

I guess if it works it would be okay, but the thing is how can scientists be absolutely sure an organ from a different animal would be compatible with humans

Because God created us a certain way, and even though there is a divine plan that will indefinitely happen we can still fuck it up.