Hereditary Wicca or not?

My aunt Buffy is Wiccan and told me and my cousin Jim that grandpa (from dad's side) was Wiccan when he was alive. Also, my lil' cousin Jesse started practicing the Craft, and as for Jimmy, he's not Wiccan but is more interested in how to raise/conjure energy. Not all of my dad's family is Pagan, just the ones I had mentioned and, of course, I'm Wiccan as well. Now i know that hereditary has nothing to do with why i'm Wiccan, for religion is more of an individual, personal choice. Yet I find it funny how some from my dad's side are more inclined to Paganism or the practice of magic. What do you guys think?