real talk, why were there never any handrails on the walkways over the massive pits and abysses in Moria? Do dwarves just not fall?
same in Erebor so this is definitely a DwarfThing ™ and I love dumb meta so here are all my theories:
1. As @findekaano suggested, dwarves are weeble wobbles and can’t fall down due to a low center of gravity.
2. The theory that dwarves have “stone sense” is pretty common. This is usually about knowing where stone is safe or unsafe, finding precious minerals, as well as a sense of direction (fav theory is that Thorin gets lost in the shire because his sense of direction stops working above ground lol.) Maybe it also means very sure footing and balance when underground.
3. Dwarves love looking and feeling cool, tough, and brave and impressing/scaring outsiders, which dangerous death bridges easily accomplish.
4. The ideal aesthetic (Durincore) is vastly more important than safety.
5. Death bridges weed out weak dwarves.
6. Dumbest one: falling doesn’t kill dwarves it only makes them stronger.