This is a very hard question to answer for me.

I gave it not a second thought in my Frostpunk playthrough.
I enacted the Organic Fertiliser law which lets you use bodies you kept in a < -30°C 'stockpile' in your settlement as fertiliser for food production buildings as a cooldown ability.
But in real life it is not such a simple answer for me.
Great game, by the way.

Right now, I don't want to ever be dead.
If I do, ideally I'd want my body to be preserved until a future generation has the technology to revive me.
This is my wish, and it is an unrealistic one.

The logical part of me sees this as a no-brainer, same with donating your body to science after death.
I just don't think people are willing to treat their relatives' corpses like horse manure. Maybe I have the wrong image in mind.
My father always jokes that we should just throw his body in a ditch to save on funeral costs, my mother is sternly against it.

The places that the dead rest hold a lot of significance for some mourners.
My grandfather died in 2011 and my mother visits the place his ash was scattered every year.

I think there would also be some kickback on the resulting crops of the bodies, whether it be superstition or people not wanting to eat corpse potatoes.

The plan sounds good logically, but I think there are too many emotional objections for it to ever be implemented on a large scale.
Maybe I'm wrong and there are millions of volunteers with open-minded families.

Is this strictly necessary for the survival of our species, or just a cost-effective farming strategy?