What is this post supposed to be?
Leonard's past is only a memory. He has no future because his present is nothing but unconnected chunks of time that last a couple of minutes and are then forgetten. His only way to tell is to write things down, take pictures, and tattoo himself with things he doesn't want to forget.
If you see that ending of the movie you see that he wants to forget. Maybe it has been a while since you last saw the film? Anyways the question that I have for you damaged is that do you like this movie, because it appeals to your sociopathy? It may appeal to your sociopathy because Leonard is living in the moment all the time. Is being a sociopath kind of like being Leonard in the movie? Thanks.