PigmanMovie

nudity is ranked more offensive than gore most of the time, violence suggested to people over 16 and sexual context suggested to people over 18. One way or another you're gonna get introduced to both IRL, maybe illegally depending on age and situations.

Not to mention, Minecraft is ranked 12+ due to cartoon violence, similarly to a lot of other games. 

it's also due to the subject matter, swearing and cussing on films ranks the movie to 18+ automatically, sexual content ranks the same, but it is more likely to hear cussing before you are legally allowed to watch the film so that is why it isn't much of a shock factor as much as nudity.

well, i'm still wondering why people are more bothered by seeing someone nude than seeing someone getting killed
infront of their eyes.

Honestly depends on what context. This is where the mineimator forums crosses the line. Sorted by offensive factor.

Cartoon Blood-less violence

Cartoon gore violence

Cartoon nudity

Real Gore violence

Real nudity

Real Death/Horrible injuries videos