What makes viewers hate female characters?

I've noticed that females in drama and movies gets a lot of hate no matter the personality of the character or how good the actresses is. I would like to know what viewers don't find annoying. or in reality is it the fact that they are women that makes them annoying? Honestly there hasn't been even one drama that I've seen where the female lead hasn't gotten comments like whore, bitch, annoying or attention seeker.  

i think it is because the big part of drama community are girls and while watching the drama sometimes you (even unwillingly) self-insert yourself into a position of main character. when this happens you just think 'if i were her, i would do this' but this rarely happens because writers make the girl usually act irrationally for the sake of drama. also, sometimes girls have very high standards set for themselves and they just cant stand when someone acts stupid. like... for girl it is easier to spot badly made female character simply because /you/ are a woman and you know how girls work, than spotting badly made (character/behaviour-wise) male character because.. well.. they are usually handsome and nice/rich/intriguing and you are like 'yeah, i can work with that. hes not bad'
...and sometimes, they just make main character be annoying. like.. when they make her act cute. i hate it when they make them speak in that annoying fake cute voice :'D

I think because if you are a girl you can identify with the character in the drama. If her character is lacking, I think most women easily find fault with it. I"m a mom... so to be honest I tend to have more understanding for the younger women in the show's then towards women my own age. Maybe because I have 2 grown daughters. 

Because women are conditioned to view other women as competition and rivals to be defeated. We've been conditioned to see the man in the story as the hero and imagine ourselves as the damsel who winds up with the hero in the end. Another woman just gets in the way, especially if she doesn't behave in the manner we could see ourselves behaving.

I dont hate the actress who plays the character no matter how bad written the characteris ,i only hate writers.even though i say hate,its more of a dislike.It is so hard to find a female character that is well-written.Relatibility isnt important for me.All i need is to be able to understand is why that character is making those particular desicions.for the most of the time,i dont understand them,unfortunately.

Well, in my opinion There is an issue how how women portrayed. It's not the actresses's fault but the character's (some of the ones I've seen anyway) I do like some female character (I've just started watching Korean dramas) the character is always looking for love, whiny, and just plain rude. There's an issue of limiting the female character in some dramas, and that's why most people don't like them (in some I've seen that role falls into the second main female character, who's always getting into the way of the main female character for the first male character and conflict between the main and the second male character for the main female character) that's why I liked, The girl who sees smells (episodes 1-11(12?) anyway) there was no romance conflict, it was cute and funny and somewhat scary they was no needless drama (again like the first 10 episodes, and then it was just cute). 

Ive gone off track, anyway it's because of the character itself that's my opinion anyway

I have a hard time warming up to weak characters. For me, female characters who allow their male counterparts to treat them like crap and still chase after them are unlikable. I also despise aegyo from anyone, male or female, so there's that as well. I can't think of any actual actresses I dislike, I only dislike a character they've played.

Male leads are often written just as unrealistically and one-dimensionally as female leads. Especially in Korean dramas. So I can't accept that as a reason as to why viewers hate female characters in particular.