[Idle musing] Why is it so rare to find a well-developed take on the cultures and lifestyles of so-called 'evil' fantasy races?

I'd suggest using nonliving constructs - Zombis, golems, hommunculi for such things, but I suppose that it would run into the same problems as with tech in our world:

1) to pricey or labor-intensive to make

2) not detail-capable enough (or not without a ton of work)

3) at some point they become sophonts, and people historically are terrible at respecting that line