Why do we even exist at all?

I can't even understand. I have nothing to live for. I don't want to see my future, I don't want to be happy because I don't believe I can ever be happy. I feel almost nothing: listening to "favorite" music is not pleasurable anymore, eating "favorite" food is not pleasurable, doing my "favorite" activities is not pleasurable. All these things just make me even more tired and bored. I know that even if I will feel something, most of the time I will feel anxious and worried. At least now I don't worry about anything because I'm not afraid to lose it, all these "good" things are pointless and don't feel good at all, all the "important" things are not at all important to me (all the people I love don't love me). I just want to sleep, and sleep, and sleep. I feel tired even from thinking. So sleeping is the best way to avoid it. Why do we even exist if everything is so blank and pointless? Why do we wake up if the mere feeling of being conscious is already so tiring and boring? I want to cry from feeling that I am still here but I feel so empty I literally can't cry anymore.