Still no idea why for gods sake they insist on having RNG-made items in their game, when this was already criticised in DD back then.
Because it's easy. Instead of handcrafting and balancing each loot drop, they can set up some algorithms, and just let the algorithms do the hard work. It also makes the game potentially more replayable.
I'm fine with that. They need to be efficient, but it needs more work.