I learned in my film studies that in the broadest sense, films have only 3 storylines, man vs. man, man vs. machine and man vs. nature. The same can be said of games. Any game is just a re-hash of one or more in combination of these types. I enjoy film whether making them or watching them and the fact that they are all the same doesn't matter to me, good storytelling is enjoyable.
I feel the same way about games, I enjoy playing games and will often get out a game I completed long ago and have another shot at it. So to me the fact that there is nothing new does not spoil the fun for me.
A few games that I truly enjoyed and would like to see expanded upon and updated with the new technologies are: Myst and Riven, Portal, Warcraft -not WOW and Tomb Raider -original play style not the way it's being done now and several others.
I guess I just enjoy games in general and do not demand a new wheel with every release.
I even like the old movies in black and white, in fact many are better than the new computer intensive CGI films being made today.