I find the Naruto world weirdly anachronistic. The timeline is clearly supposed to be modern because Ninjas have access to electricity, cameras, computers, movies, etc. but at the same time I don't remember anybody having a car, farm work is still done entirely by pre-industrial means, and even the clothing in the show is a mix of old styles mixed together with modern concepts (some characters run around in robes, others are sporting fucking kevlar vests).
Furthermore, why the fuck has nobody figured out guns? I mean I get that Ninjas and Chakra and magic and shit kinda make them seem underwhelming by comparison, but you're telling me nobody in the ninja world would rather have an assault rifle instead of a pocket full of kunai?