I think for things like this, being dispassionate is a coping mechanism. If you engage the sympathy part of your brain, you won’t be able to do it. If you don’t do it, then humans die instead.
It doesn't mean we have to change everything and start dying to save pigs' lives. But we should debate it. And if it's morally wrong can we at least call it what it is.
Ask the beneficiaries of a process if they this it's good, and the usually say it is. Doesn't mean they are right.
Couldn’t we do both?
It may be a simple choice for some, but it won’t be for others.