When it comes to love, whether you're an old man and a little girl, a couple of 40 years old lovers, an old lady and a young man, or even a granny and a baby boy, it exists if he/she is the one.
Just like it's tagline "Life isn't measured in minutes, but in moments"
My favorite part is Button's monologue (and of course the scene) about destiny (the morning on Daisy's accident). Super! Fincher!