The moment she walks down the aisle - that moment in time that will mean a lifetime. As the years go on, I think that the memory of your father walking you down the aisle, and the first look from the church altar of the groom on his wife is one that should never, ever be forgotten. Of course, in the excitement of the moment, rarely does a bride or a groom remember these moments. That is why we do what we do!
My own father is gone, but I will never forget that moment and my memories are preserved by photos that were taken. Trends come and go but making sure that moments like these are beautifully documented never goes out of style!