Why can't I take a compliment?

-"You have such beautiful hair!"
-"Yeah, but it sheds so much.  You should see my shower drain.  It's disgusting."

-"You have such nice skin.  You're like a porcelain doll!"
-"Oh, but I break out so much!"

-"You have a pretty name!  Your mother made a good choice!"
-"I wish she chose the English version.  No one can spell it or say it properly, and it just sucks."

People actually said these things to me recently, and I actually responded this way.

Why?  WHY??????

Compliments

People are still complimenting my hair and how nice it looks since I freed its natural curls from the confines of a dreaded ponytail holder.

They have to stop soon or I'll say something really terrible about it just to get them to shut it, even if it isn't true.

I have a hard time taking a compliment. I think I have this inferiority complex where I feel like I don't deserve them. Then again, I notice a lot of girls do this.

"That is an AWESOME DRESS!"

"This old thing? It's no big deal...it's made out of bits of blankets that homeless people abandonned on the street...nothing special."

Why must we do this? Why can't we accept that we look good, and that other people think so too?