I'm going to be walking myself down the aisle as well. Unless something drastic happens, I doubt my father will be there to begin with and I'm really not close to him. I thought about my mother, but we both agreed this way felt more natural. On an interesting side note; in Hindu weddings the brides family is already seated up front on one side of the "tent", so another of her close male relatives walks her up. My friend has always been extremely close to her father, but also her uncle, so he got to escort her up. It was wonderful to actually see the families face as she walked down the aisle.