In fact let's see:
Rage --
Everything about 40k.
4e vs. 3.5e
Lawful Good? AKA Fallen paladins
DMs
Fighters and Casters
LGS bullshit
Magic the Gathering
Shitty parties
women
Actually everything.
Furries:
Like every meme and mascot (RAT ASS, Flare, drawfags, etc.)
Also no one hates furry threads
Meh. Just like here, I avoid stuff I don't care about/don't like. More than once, I've had a reasonable discussion about stuff like Philosophy and Politics. Some threads have been hillarious on epic levels. I enjoy discussing/creating campaign settings with people, and some days it's a great venue for campaign art.
Maybe it's changed in the last year, since I've stopped checking regularly, and I'll admit that there's a lot of shit to wade through to get to the golden nuggets. But of all the subboards, I like /tg/ the most, and I've had genuinely good and wholesome times there.
All that said, though, I avoid even /tg/ during the night. Early afternoon, when the kids are in school is when it's best.