anyone has ever experience depression that requires help?how do you cope.

I think i need help. I cannot remember the last time i was truly happy. My favourite part of the day is basically to look forward to bed time, where i can just cry uncontrollably without anyone knowing. I just feel like crying ALL the time, i have no interest in everything, i dont feel like eating and i always think of ways to leave this world. I feel this world just doesnt have place for me, ultimately i always ask myself why do i want to live in this world where people are killing people, backstabbing people, cheating on their other half, being selfish, sleeping around with people, hurting their love ones. i am only 24 but i feel it is enough of a life cause i think i have seen enough. The only thing stopping me from doing anything at the moment is my parents. Sometime i just want to tell them to just let me go because that is the only way for me to be happy, i believe there r happiness in the other world, it will be more peaceful there. people die anyway, whats wrong with going earlier?