Any Nihilists here?

[GrandizerII]

Entirely possible.
Or it could just be that nihilism isn't that depressing.
Like, it's less depressing than thinking billions of people are in hell, including your own loved ones.

Well yeah, maybe it's depressing/disturbing but not enough to drive one to commit suicide. I don't see how we should expect a markedly higher suicide rate among nihilists compared to the general population.

Anecdotally, I personally hold to a very disturbing worldview, or rather a worldview with very disturbing implications. The worst that happened to me as a result is that I had an existential crisis for a week or two, and then I was finally able to move on with life. I never once thought about committing suicide as a result.