Honestly, a lot of NSFW subs devoted to somewhat niche fetishes. I saw lemmynsfw.com started up as a separate instance for NSFW content, and I'm hoping at least some of these subs make it over there soon.
The only nsfw content I would look at desensitized me to a lot of violence which is great for my job but maybe not in regards to how people perceive me. If I'm understanding this right I'm glad that NSFW is its own thing.