apologies for the lengthy post--I have a lot to say
Not gonna lie. I watch and play stuff some others may have problems with.
-I'm an anime geek, one of my favorite series is called Blue Excorcist, in which the main characters are half demon. Anime often contains supernatural themes, and since it comes from a pagan country, these themes are rarely in sync with Christianity. They like to mix things together sometimes, too, including elements from Christianity.
-I plan to read Harry Potter, after having heard from Christians who read it. (Some of them people I greatly respect.) I've also heard from Christians who used to be into the occult, and say Harry Potter isn't anything like it.
-I play Pokemon, after having grown up in a family where Pokemon was considered demonic.
I know all the objections. I just know not to take fiction seriously. To me, mythology isn't a big deal. I grew up reading Greek mythology in literature class, but I don't worship the Greek gods. (C.S. Lewis actually used elements from Greek mythology in his Narnia series.) So, I think you can find spiritual mythology interesting without taking it seriously.
But I do my best to respect others's convictions and reservations. Though I have a hard time stomaching people thinking things like Pokemon are demonic...that, TO ME, borders on ridiculous and paranoid. Still, if that is your conviction I must respect it.
I've been a geek for *some* kind of fictional media my entire life, both before and after dedicating my life to Christ. (I've been saved since I was a child, but rededicated at 16.) I am careful of moral content, and I know how to discern spiritual content. (Though simply containing something I don't approve of isn't automatic grounds for dismissal in my book.) But the biggest danger has been making my entertainment an idol. I've had to repent for that more than once.
I think the whole occult accusation is overused and often illfounded (at least when I have seen it used)...and if your resource is Jack Chick or someone like him who relies on sensationalism and unfounded claims, I will not take you seriously.
An example from my experience:
A couple years ago I got into a series called Fullmetal Alchemist. I ended up pulling my little brother into it, and my mom didn't like that. (I respect her authority over my brother since he's still a minor and apologized for getting him into something she didn't approve of, so please don't get the wrong idea.) She pulled up an article on "occult references" in media...to be perfectly frank, I could not take this list seriously. It listed things like ghosts, black cats (it slammed Sailor Moon for having a black cat character). I didn't make it past two or three pages before putting it down.
However, before I put it down, I saw that one thing it listed was alchemy, and it showed an alchemy symbol.
Now, I have no idea if alchemy was actually occult or not. (To my understanding it was simply a failed science that led to the discovery of chemistry.)
When people assume that the media is trying to make you go occult just for having spiritual mythology (and alchemy isn't even that) present in it, that bothers me. Fiction was made to explore that which does not exist in reality, after all. I think it's more likely that the author found the idea of a world with a developed science of alchemy an interesting thing to base her story on, rather than them presenting occult practices to the world. Y'know? (And that's assuming that the claim of it having occult connections is in any fashion accurate.)
Neither do I take stories like "this person did this after reading this" seriously--that's what they used to say as "proof" that rock music was demonic when I was a kid. They still do it, too. And I know that's false.
The way these stories, sourced or not, are used is based off a logical fallacy (post hoc ergo propter hoc), for one thing. And I simply don't know the whole story, even if it was reported on the news. Plus, there is such a thing as mental health disorders that make it hard for people to distinguish fiction from reality--schizophrenia. Or it may simply be blame shifting by someone who doesn't want to take full responsibility for their actions. I wouldn't assume it's demon possession.
Especially when I know people who do watch/play/read that something and who are perfectly fine. And especially if those people are strong Christians. Or if I watch it myself and have no troubles with it.
The thing is, I've found that sources that are biased against something are horrible for learning about the content of it, since they put everything in as bad a light as possible and often actually take things way way way out of context.
I'm not saying that no media exists with which you shouldn't at the very least be careful about--that's not what I'm saying. But having grown up with some pretty extreme views against media and having left that behind, I do wish my brothers and sisters in Christ wouldn't be quite so quick to write things off.