My Orthodontist Wants Me to Put Bonding on my Second Upper Tooth?

Hello, I am now having braces and my orthodontist wants me to put bonding on my second upper tooth. She said that otherwise I am going to have an incorrect bite or gap between my teeth.. Actually I don't want bonding,I have read a lot of reviews and everybody says that it doesn't last too long and that most of the people change it every couple of months, because it falls down.. I really don't know what to do.. to put bonding or not.