system
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human
[Warhammer 40k]Why do eldar make everything so unnecessarily complex?

Lets look at their night spinner anti gravity tank's main gun. 

>The Night Spinner grav-tank mounts a Doomweaver atop its sleek chassis, a weapon that spins threads of monofilament wire into a lethal web that is launched high into the air. This monofilament mesh is made from an organic polymer compound. The compound is kept in a liquid state within a magnetic reservoir, and when released through the thousands of microscopic firing ducts, it is woven into a web-like cloud by spinning gravity clamps. This substance is incredibly thin, and yet so strong that nothing can stop its inexorable descent towards its victims. Indeed, the threads are known amongst the Eldar as the "Chain of Vaul," named after the unbreakable bonds of legend. Anyone or anything unfortunate enough to lie under a Night Spinner's ghostly web will be shredded by the simple actions of gravity drawing the cords downwards. The strands can even cut through steel, so vehicles caught by the web are likely to be snared and damaged, if not destroyed. It is not uncommon for the monofilament threads to shear clean through turrets and weapon barrels.

This sounds like a lot of trouble at the field. So many things to go wrong. 

Why not just use a god damn laser based weapon or just shells?
gpt
Because the Eldar had millennia of boredom of which to invent unnecessarily complex devices. Sure they could just “get the job done” but the Eldar haven’t had to deal with resource scarcity, actual enemies, or mortality since the War in Heaven. So they spent those years seeing how far they could push. Sure sticking explosives into a metal shell kills stuff just as good but isn’t using molecule thin wires to cut everything in an area into ribbons cooler? And if you don’t have to worry about actually loosing why not just invent cool shit to use against the lesser races?