Why the hell people are being so judgemental , being so sarcastic about one appearance?

You do know that I'm a girl,
And if you judge me by my size,my look,
For sure I'm gonna be mad,
Because I'm a normal girl,
I don't have confidence in myself.

I know I'm fat,
I know I'm ugly,
I realize my flaws,
I know myself really well than you.
But you don't need to judge me by my appearance
Because it got nothing to do with your life!

No matter how fat I am, as fat as a hippo or even fatter,
That thing won't change your life!
IT WONT CHANGE YOUR ******* STUPID LIFE!
*******!

FROM NOW ON,
I WONT CARE ABOUT WHAT PEOPLE TELL ME ABOUT HOW I LOOK BECAUSE ITS MY ******* LIFE AND I CAN BE WHO I WANNA BE AS LONG AS IM STILL ME AND ME.

AND TO ALL THE GIRLS OUT THERE,
LISTEN UP,
YOU ARE BEAUTIFUL,
SO BEAUTIFUL,
******* BEAUTIFUL
THAT NO ONE CAN REALIZE IT,
THAT IS WHY IT TAKES THE RIGHT GUY TO NOTICE AND THAT MR RIGHT , WILL LOVE YOU FOREVER. BE PATIENCE, GOOD THINGS TAKES TIME.
DONT BE A FOOL BY TRYING TO BE PERFECT IN THOSE ******* EYES,
BECAUSE THEY ARE NOT WORTH IT BUT YOU ARE WORTH EVERYTHING.