I am pretty convinced of the whole birth-order business. I was 5ish when my brother (12 years older than me) pretty much left the fam. They say those are the crucial years of birth order affects... So with that and since I'm the only girl, then I'd be more of an only child. True, I have a lil sis now, but she's 11 years younger. None of my other siblings ever lived with me, and are either 1/2 or step anyway...
thus ends my pointless babble for now.