Read after watching the movie only (SPOILERS) To Help you all understand

Rating: 9/10 (22 January 2009)

All of you are critiquing this movie and have no idea what a good film is. When telling a good story or directing a good movie, you must leave things up for discussion or interpretation. This wasn't transformers, it was a film that allows different people to grasp different feelings from it. Many themes can be found in this film such as "Don't judge a book by it's cover" - People assumed that Benjamin was an old man who was going to die any day but inside he was as young as a baby.
"The separation between body and mind"  Although Benjamin's BODY had aged backwards, his mind had been aging forward just like everyone else. Which can be seen by the fact that a 5 year old child has Alzheimer. This shows you how powerful the mind is, that even when everything is reversed it is still strong enough to function properly.
Ingenious  To have a child grow up backwards, all alone with nobody to relate too. He is with the old people who have seen it all and are content with the confines of their nursing home. Benjamin can't sit still like that, he has the mind of child and wants to explore his surroundings. He seeks the opportunity to take chances, like working on the boat for a day or having drinks with his real father, traveling the world and joining the navy.
Due Date  Other than terminally ill patience, nobody ever knows when they will pass. Benjamin knows his whole life, how much time he has left in this world. As he gets younger and younger, the countdown continues to the point where he knows he will eventually run out of time. 0  infinity is how we look at a normal life but Benjamin's was 80  0. He knew that barring some type of tragedy that he had exactly so much time left.
Relationship  Benjamin begins his romantic life in a backwards fashion as well. While many older men find themselves incapable of procuring a women based on their looks or abilities they have to pay for the company of a stranger. All the while Benjamin is having fun but longs to be with Daisy the one he loves. The only problem is that Benjamin and Daisy both love each other and at one time or another when they do consummate their love they both want to feel good about who they are at that point. ( This can be seen when Benjamin turns down Daisy when she visits home initially because he feels old and she looks beautiful. The reverse happens when Benjamin looks younger and Daisy is all banged up in the hospital after her accident and spurns Benjamin.) But finally when she is well she finds Benjamin and is ready to be with him.
Love  Benjamin and Daisy love each other when he is an old man and she is a child and all through their lives the continue to love each other all the way through to when he is a young child and Daisy is taking care of him. Love knows no bounds and no age.
Symbolism  Every time Benjamin's life is about to change or progress there, is some type of clock in the picture or the noise of a clock ringing or changing an hour.
The clock in the beginning that roles in reverse seems to be directly connected with the life of Benjamin Button. As the clock roles backwards so does Benjamin's life. The only other person place or thing that is on the same page as Benjamin is the clock. It is almost like a countdown to the end of his life and the only person place or thing that Benjamin can relate too.
Another symbolic point is the introduction of the humming bird. The Humming bird's wing pattern is that of a figure eight, which is the symbol of infinity. After the boat captain passes away in the attack Benjamin looks at sea and sees a humming bird fly in his direction. This symbolizes that even though he is dead, that he lives on in Benjamin because he shared his stories with him. Later on in the movie after Daisy's daughter figures out that Benjamin is her father and that she had unknowingly met him before she finishes the book and we see the humming bird. This is symbolic that Benjamin now lives on through his daughter because she has heard his story.