I have to jump on board here. She has never been a favorite of mine, and at times is my absolute least favorite character. And it's weird because I feel like I also have a very personal connection to her character. Her past is very similar to my own (abusive father, broken home, issues with trust, a mother who tried to kill her [yep]) and in many of her POV chapters I totally and completely understand her emotions and fears because I've been there. I actually had to skip over some of her flashbacks in WoR and have a friend summarize them for me because they were just too hard for me.
The problem with her for me, however, is that I coped with all of it in the oposite direction as her. She represses and refuses to deal with her problems, and I veered hard in the other direction. I do not repress and I am a very "let's face this thing head on" type of a person. I don't let things go unsaid, I deal with stuff (I'm very Jasnah-ish, in fact), and because of how I've seen that work for my good in my own life, I just hate watching her do the opposite and screw things up over and over. She just comes off as horribly immature to me, and I frankly don't think her jokes are funny...
All of that said, I have absolutely cried the hardest at her moments. That Shallan/Wit moment in OB destroyed me ("Accept the pain but don't accept that you deserved it.") Gosh, y'all. That was rough.
So, for me, I think I see her as a person who is dealing with the same stuff I've dealt with, and doing it in a very immature and wrong way and that just irritates me to no end. She's a well written character and I get where she's coming from and she's very realistic to me (more so than I'm comfortable with at some times), but my gosh she just drives me up a wall.