I just talked to someone today who told me 2 weeks ago he had a friend he grew up with in town that committed suicide after he started believing in Satan. He went as far to join some stupid satanic cult and before you knew it he was dead. How do you explain that?
Just to address that too:
1. You're commiting the Post Hoc Ergo Propter Hoc (X happened after Y, therefore X happened because Y) fallacy.
It's entirely possible and probable that something else triggered both. E.g., schizophrenia would be prime suspect. E.g., maybe he was harrassed by his fundie "friends" to the point where it caused both his theatrical pretending to be a "satanist" to troll them, and then his death. Etc.
2. I wouldn't really trust a fundie's judgment of whether someone's a satanist. Bast knows that even playing D&D or reading Harry Potter or listening to heavy-metal/emo/goth music or wearing some t-shirts, can get some of the... intellectual proletariat to label you as a satan worshipper.
Heck, you just judged some people as Satan's minions for just committing suicide. You know, not based on actual evidence that any kind of worship was involved, but just post-hoc rationalization.
So especially since, as was said, there is no satanist cult that actually worships satan, I'd take your friend's statement there as rather... inconclusive.
3. (Or maybe 1.B.)
If you want to guess blame, fine, let's play that. Could it be that it was his being falsely labeled as a satanist, and harrassed for that by fundies, which ultimately caused his suicide?
What if he was a little depressed and just needed support? Harrassment, accusations, and blaming the victim (e.g., you're to blame for having those problems, 'cause you don't bleat for Jesus like the rest of us) can easily push someone over the edge, if they're already in a very bad mood.
So maybe, just maybe, it wasn't Satan who's to blame for that guy's death, but the lot of you fundies there. Maybe his blood is on your hands after all.