Well, a few reasons really...
There is something of the comedy about Liz. She is definitely a professional troll, and a very good one I suppose. I get the feeling that if you scratch the surface there might, just might, be an alright person underneath. Also, I do feel a bit sorry for her. Her husband was a shit and she obviously has trouble with the men. Probably because she is neurotic. But she is very open about all of this. She doesn't try and hide what she is.
IK seems like a schoolyard bully. I won't say too much as MNHQ deleted all of the anti-IK posts on a thread concerning her a while ago, but yeah. She is like the Queen Bee whilst her minions sit fawning over her. And she isn't even as good a writer as Liz.