So would I be right in saying that your opinion is that it would be generally sucky if there wasn't anything new? Boring, as in, the same things (or one same experience) continually; and having all knowledge and thus having no learning?
I dunno, I think it's possible to enjoy things even when you know them back to front - in fact, some times it's easier and better to enjoy things that you know very well. Playing guitar would be my own personal example. Learning new stuff/ways to play is great fun, but I can find enjoyment in playing something a song I like that I know back-to-front and has nothing new in it.