What if there is no begining or end?

Time can easily be a man made concept. I often get confused about Adam and Eve's timing and the Dinosaurs. (IM NOT TRYING TO BE FUNNY) im just saying what if the world has always been here and things have always existed, also meaning that things will always exist. no begining, no ending. Ppl will get pissed off becuase they can conceptualize it or becuz the bible says ther is a begining and end.. but the timing of archeological facts proves alot of things to be misleading. (NO OFFENSE) JUST MY OPINION.