[quote=@Altered Tundra]
<Snipped quote by Mr Allen J>

There's a lot of nudity. That could be a reason. There's also blood and dragons. People like dragons.
[hr]
Could somebody explain the appeal of Homestruck for me? I literally have never cared for it. Not when it was actually relevant nearly a decade ago and most certainly not today.
[/quote]

Homestuck* is one of those 'in-joke' style phenomena. Something that is  relatively popular but still mostly obscure and cryptic enough to make people who watch it feel part of something interesting. Its also more about the community than about the content. Lots of shipping, discussion, theories  and  fan created media.

Its very LGBT friendly in a very subtle way, which automatically makes tumblr and hipsters adore it.

The fandom is also  really REALLY insular and basically has a "you either get it or you don't" mantra which further makes the individual feel like part of something special, which if you have few friends or accomplishments in real life, can be extremely appealing.