I think it does run in the family. My dad is very well hung, i'd say he's close to 10" soft compared to my 9" soft, he wins, damn, hahaha. i've also seen my uncle and cousins, my uncle was about 8" soft. my two cousins (19 and 14) are also considerably hung, the older one told me he is 8" soft and from seeing my younger cousin i'd say he's about 7.5" flaccid. my uncle on my moms side is hung as well, he's about 7" soft but really really thick, I must say it looks impressive. so yes, I do think the size of your penis is based on family genes. one of my good friends is black and I was at the gym with him and his dad and when we were showering I noticed that both of them were hung like horses, my friend is about 9" soft and his dad was probably close to 10" soft, I asked him about it and he said almost all the guys in his family are 7+" hung, so i'd say it's definitely in the genes.