Maybe because of the way you draw?
Some criticism, starting from the top:
- the fluff of bangs at the front of her hair just looks like you doodled a few lines to hide how deformed the hand is underneath
- where is the rest of the arm behind her head? Unless it's curled at a very odd angle more of it would be visible somewhere
- the anatomy of her neck and shoulders is a bit messed up. She doesn't appear to have a collar bone on her left arm, and, since the angle of her chest implies she's arching her back a little, her neck would be thinner and more shadowed
- her breasts are defying gravity; I get that you're trying to make her look pert and sexually appealing, but nipples just do not sit that high up on the breast, and if she's not wearing a bra then the only way to get cleavage like that is with a very botched boob job
- the line of her waist, hips and pelvis is not a pleasingly smooth curve, it's a very bumpy line. And why is the crease of her pubic are higher on her left than on her right?
- the reflection in the water isn't a true reflection as it misses off her skirt and bag and reflects her abdomen, and part of the blue line detail in the water actually goes over the top of her in the full size version
I didn't write all that because I'm trying to be a jerk, I wrote it because you seem to have an attitude problem and need to be shown the flaws in your work that make people rate you lower. It isn't a beauty contest, the artwork in the portal isn't rated based on how attractive the girl is, it's based on how well she's drawn. You could draw an extremely ugly woman but if you had clean linework, good body proportioning and nice colouring/shading then your score would reflect that. Drawing an attractive woman badly doesn't mean you deserve a score of 9 or 10.
So before you dismiss other artists' work as being "crap quality... with fugly chicks", please actually take a long hard look at your own abilities and compare them to the technical abilities of aforementioned "fugly chicks". I would probably have been more polite in my review of your piece if you hadn't walked in with such an attitude.
And to save you the effort of calling me gay or some insult of that ilk, I'm a woman.