Don't worry Kacie....it all sounds strange to me too when people haven't heard of it. I also live in the south, TX to be exact and people won't stop bugging me about bridal pictures.
I think they are a great idea because it gives you a chance to play with your hair and make up prior to the big day to make sure you like it. You also get to pick good pictures of you for display. HOWEVER, I am not getting them done cause I am just way too lazy to do this. Thinking of having to get all dressed up gives me a headache. Everywhere I go though people keep asking me when I am going to get them done.