People from this fandom tends to do these kind of stuff a lot whenever isn't wanted.

Reasons? Not sure, but whatever reason is, is not correct to compare someone's original creation with something that already exists.

It annoys me when people (in any fandom) goes through other fandoms pointing out these things and giving a bad view of the fandom.

That may sounded quite douche-y from me but that's how I see it.

And to be honest... in which sense your characters are like Homestuck characters?

????????

I don't think people is even trying to compare and states it.

Also telling people that, just makes them feel like all their time while creating the OC was wasted.

So yeah, you got your reasons to rant. And that's OK.

(don't expect all the Homestuck readers to be like this, some of them are actually good people. Don't blame the entire fandom or even the web comic itself over the act of a few.)