What if you are older than history itself? What if you helped create and shape history? What if you needed someone to name a species something to identify yourself as belonging to that species? What if you are so old that you have outlived multiple generations and centuries? What if you had the opportunity to shape religion itself?
Scientifically, if someone's body is able to regenerate all the critical organs periodically, it should be possible to live long.
Would you want to be such a person? Will it be FUN to be such a person? Check out "The Man From Earth" to see for yourself.