You know, that's actually a pretty interesting question, I'm not sure that has ever been researched; I guess you'll have to look. If I had to take a stab at it though, I would say that many of the things we like are inherit, we may pick up on same things from our parents. Just like you may inherit a parents natural ability for music, you may inherit their love of certain foods. I'm sure there are many cases where a love of something is instilled from childbirth though, I grew around my Dad loving Spider-Man, comic books, and drawing; as I grew older I noticed that I loved them all just as much. Is it a coincidence? Perhaps, but I guess we'll never know will we?!