Just curious: Exactly what is it about Lucy Heartfilia that some anime fans dislike/hate as well as can't stand about her?

They hate that:
1. She uses sex appeal to get what she wants
2. Dresses really seductive
3. Has an annoying voice
4. People always ship Natsu with her aka NaLu haters
5. She cries too much

I don't even like her that much. I mean sometimes she's ok, but most of the time, I just wish she would shut up.

She's mean to everyone, especially Happy

A lot of people find her annoying o overemotional o hate that she's used for fanservice.

If tu think she's annoying, and your a teenage girl that isn't goth, then tu just called yourself annoying AND overemotional.

tu would be a lot whinier than she is, and tu know it so don't hate her for being human

Everyone can have their own opinions, so I respect yours. But tu have to respect mine. She is VERY rarely used for fanservice. And when she is, that's her being a teen. Just like you.

Lucy haters are a whole lot más annoying than Lucy is. Lucy was a great character.

I used to really dislike her (can't remember why though, maybe because of the fan service and her being too clingy all the time). Now I'm kinda indifferent about her, but she's still one of my least favourites.
I just don't find her personality to be appealing and don't see anything that "special" about her, that's all.