Post Apocalypse

I walk alone, bewildered, scared to death. I haven't any memory... survey Through ash and try to think...I snatch a breath And try again. The air is foul today! I must be dreaming. That's it! I'm dreaming. I'll soon awaken from this craziness And find myself aright again. Beaming A smile and laughing at myself, I guess. But something isn't right. It's what I see: The people, where have all the people gone? I see homes and autos, some leafless trees. They are ash-covered phantoms. Begone! I'll waken soon. It's only imagined, A dream. Oh God! Please help me comprehend.