because she is a fucking monster, that's why. she's creepy, she's stupid, and she's ugly as hell. is that enough for you?
no, she's not perfect. she's not perfect indeed. she doesn't need to be perfect to be a lovable character. she just needs to look better.
no, that is not the reason why. i don't even know how you came up with that in first place.
i love him myself, there's nothing wrong with loving him. he's so cute.
but there IS something wrong with loving harley. i mean, how can one love such a monstrosity? she's GROSS. she's fucking GROSS, man. i hate her, i hate her stupid face paint, her crybaby pigtails, her harlequin suit, EVERYTHING. she's THROUGHLY gross and ugly. i despise her so much.
good things about her? they don't exist. i don't know why they had to include her in batman. she's the worst villain EVER. she's a SHAME, a FAILURE, a WORTHLESS MONSTER.
and so is a failure everything she (attemps to) does. -_-
waste of space and time, good for nothing, worthless and ignorant.
there, good enough for you?