There Is A Good Chance That The Skeleton In That Picture Is Actually Dead. The Imperium Worships The

There is a good chance that the skeleton in that picture is actually dead. The Imperium worships the "human form", and the skeleton is the most bare-bones representation of that form, hence why you see skeletons on a whole lot of shit in 40k (relic storm shields, for example). You can see another example of this where some Necrons were analyzing an Aquilla that was on a planet they conquered, and they found bone fragments mixed in with the metal (they thought they were impurities).

Some more fun 40k facts for Rogue Trader mutuals!

The average human lifespan in Warhammer 40k is roughly the same as it is right now. However, the wealthy people, those who are well-connected, and important/high ranking military officers have access to rejuvenation technology and augmentations that massively extend a person's life. The wealthiest people can live for centuries. As a Rogue Trader, your character will be 100% pressured to undergo these treatments for the stability of the region. Theodora is well over 300 years old at the start of the game.

The first Rogue Traders, those who were personally granted warrants of trade by the Emperor himself, were actually people he did not want around. They were people too wealthy/popular/inconvenient to kill, but people he did not want close to him as he built the foundations of the Imperium. For him, this was a win-win situation. If they did what they were told, they would go into unknown corners of the galaxy and bring them into the Emperor's fold. Or they died trying. Worst case scenario, they got corrupted (or at least power-hungry) and turned on the Emperor while in deep space, which game him perfect justification to kill them.

There have been other warrants of trade signed by Primarchs and other extremely important people for more practical reasons. But the original warrants signed by the Emperor were, as many things concerning the Emperor, kind of a shitty thing to do.

A lot of 40k's lore borrows heavily (steals) from Dune. Including a total ban on artificial intelligence and machines that do any complicated calculations. (it's not just illegal, it's heretical) Cogitators look like computers as we understand them, but their actual processors are often human brains. Servitors who have had their bodies mutilated even more than usual, their brain functions brute-forced programmed to do nothing but function as a computer.

Remember this skeleton on the main menu screen? That's a person, not a spooky decoration. (the Imperium is SUPER evil)

That being said, the Adeptus Mechanicus totally break this rule all the time.

But this rule isn't just because the Imperium is evil. Daemons can, and have, possessed machines of all kinds to cause countless deaths across history. Part of the reason all technology and maintenance is so heavily ritualized is because it HAS to be, in order to prevent demonic infestation. It's not just because everyone in 40k is completely ignorant of how things work.