I liked this very much. I liked the rhythm almost instantly, and the sentiments put forth are powerful, and beautifully done. The loneliness was blinding. This line "Not a single one..." including the ellipsis was...beautiful. It elevated the feeling of being alone to new heights. The next few lines:
"No candle to help me find my way
Not a flicker of its warmth
My blackest night is my darkest day"
were so well crafted. Instantly I thought of a single flickering flame amidst the all-encompassing darkness, and how much hope would be poured into that tiny yellow light. How lonely and frightening that would be. And then to be without it... Brutal.
Those four lines were - for me - the strongest, and most brilliantly written lines, but the last two,
"Yet this time I fell to the floor
Your hands didn't reach for mine..."
again aided wonderfully by the ellipsis, gave the sense of complete sadness, and of giving up, of letting the dark and doom consume you, destroy you.