Kitty Maid & Tsundere Girlfriend

I hated how it was done in this particular hentai piece, yet from watching the start of "Sayonara, Zetsubou-Sensei" I didn't really mind it there.

I think my problem with this particular piece is that it somewhat white-washes just how freaking creepy it is. It is using quite a horrific topic for a quick laugh and not doing anything else with it, as a bonus it is in no way acknowledging how creepy that kind of behaviour actually is, and to top it of it doesn't have anything to say on the subject.

In "Sayonara, Zetsubou-Sensei" they don't just give a suicide gag without talking about it, it is the subject of the next good part of the episode. While there is dark humor about suicide, it doesn't completely trivialise suicide, and it at least has something to say about the subject.

Do also remember that while the subjects seem similar one is about someone trying to do an action of self-harm while the other is about trying to manipulate another.
Seen from this perspective one was "saved", while the other achieved something by questionable means.

Oh I get the intent, but it doesn't really change my reaction to it. Because while other folks might see this and think "oh, haha it's like Sayonara Zetsubou-Sensei," for me it elicits an entirely different set of memories. That said, I'm not gonna stop people from laughing at dark humor. Hell, my reaction ironically just adds value to that: "it's so dark, some snowflake flipped out about it, HAW!" Is what it is, though.

Sayonara, Zetsubou-Sensei was such a good manga. And a good anime. It remains one of my absolute favorite mangas/animes besides School Rumble and Kaguya Wants To Be Confessed To.

Spin, spin spin! Dance the fantasy rumba! Fire the apple-picking beam!

Also this.

yeah, I guess since the Japanese suicide rate is considered such a major social issue they might as well just make fun of it and at least get a laugh out of it.

Now see this is darkly humorous.