Very sad write, you express your solitude in a tangible way as well as lament maybe for a life that isn't filled with questions and the unknown.... I like the opening lines how you describe parts of your body being this and that, but how in the end, it doesn't even matter because this sadness is basically like your only vision. Don't give up hope though that there will be other things in life, sadness won't dominate..... Good image with the moonlight in the end, definitely felt the dream-like quality to it as well as a hopeless surrender to the night, to become nothing special and just a particle of dust. You expressed a lot of emotion with few lines.

Take care & keep writing!