If death (assuming no afterlife) erases your conciousness, it should also erase your memory of ever having been concious. It should be as though you never existed at all, right? Not just future and present gone, but past.
So then how are we here, being concious and remembering stuff? How could that be unless the universe is inherently static, or at least endlessly self-repeating, and us being concious is just a permanent feature of our corner of it?
Has anyone else thought about this or am I just rambling?
So no, there is no such thing as consciousness. There are an infinite variety of states to whatever pile of hydrocarbins that feels it at the time though.