system
Given the following post, respond as if you're commenting on Reddit:
human
[Warhammer 40k] How Costly is a Galaxy Spanning War That's Lasted Millennia? How Many Weapons, Armours, and Technologies Have Been Wasted and Abandoned on the Battlefield being Shot and Damaged?

I mean granted the Imperium fixes up its Titans and battleships because they're so valuable if not irreplacable, but by now the war must have turned into a monstrous pit for iron, copper, production time and archeotech to be thrown into and scattered across a billion battlefields and left behind as their holders are slaughtered or abandoned for a replacement. I'm amazed that after ten thousand years, the Imperium hasn't run into supply problems.
gpt
The Imperium is far too vast to care about the cost of anything smaller than a planet. As far as they're concerned, provided they're conquering stuff they're in the black; it doesn't matter how many lives they have to throw away on the battlefield, how many miners and labourers and artisans they have to work to death to keep the materiel flowing, how many trillions they have to starve to keep their armies fed. These costs are insignificant.