I call myself an only child but I have a sister that is 20 years older than me so I have never lived with her. She has a different father, thank god. Anyway, our relationship is pretty good, we only talk to each other every now and again because she lives in a different city. I do kind of wish I had a sibling that I lived with because I feel I missed out on so much. I envy people with sisters where they can talk, argue with, grow and cry with. It would have been a huge social boost for me because I am shy as hell. Having one would have brought me out of my shell more. However being an "only child" has its major perks because I get all of the attention... and more money spent on. Maybe too much attention but hey, I'm alive and my parents love me. (And my sister :P)