Why am I still alive? I am misserable all I have ever wanted was to be in love and happy?

yet I sit here alone and pray for death, yet, it does not come, but I am so sick of life, so sick of this life, all I've ever wanted is happiness, peace and tranquility and I am seriously tired of living, and I pray for death because, I do not have happiness and am consumed by loneliness and dis pare and I don't understand why God created me! Please pray for me to either cease to exist or to be filled with happiness, joy, contentment, and love.