Well, it's a bit of a mystery. There's no definitive evidence that Kurt Cobain was a die-hard comics fan, but there are hints that he had at least some appreciation for them.
Most likely not. Usually, when something is called 'Kurt's World,' it implies a fictional setting or story. There might be elements inspired by real life, but it's not a straightforward true account.
Kurt Cobain was not slated to be in Pulp Fiction. The casting and character lineup for the movie didn't include him. It's just a misconception or rumor that may have circulated for no valid reason.
Definitely. Kurt Vonnegut's writing frequently explored futuristic and technological concepts, which places him in the realm of science fiction. Many of his novels, like 'Slaughterhouse-Five', have science fiction elements woven into their narratives.
I don't know for sure. It could be inspired by real life, but it might also be a purely made-up tale. Without more information, it's difficult to tell.