Why do you cut?

My best friend looks at my arms and asks why?
I cut because i deserve the pain i messed up. Im a mistake my dad never loved me my friend passed away im told im worthless. I look in the miorro and i see alille girl who wont make it. Bullied everyday. People used her she lost everything. I sit there everynight and look at the note,pills,blades and rope and wonder do i have anything to live for but i think i dont. The only people that are there is my mom and my bestfriend. My mom doesnt know anything and i dont know how to tell her im depressed. Will she want me?