Answer:
Searing 'cross the pitch-black skies I scream in celebration Yet moments later my outburst through I am naught but imagination.
Curtail me thrice I am a youth; behead me once a snake; complete I'm often used in truth when certain steps you'd take.
I live off of a busy street if you want you can stay for an hour or two but if you don't pay rent I'll tell on you.
Lives in winter, dies in summer, and grows with its roots upward. What is it?
A large oasis in the desert. Come with cash and leave with none. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.