Both sides of my family are h4rdcore Blues. My dad's side especially, all my uncles and cousins still go (and quite a few to the Moors as well).
My granddad on my mom's side's last words to me were asking about how Blues did that afternoon.
So no, I never had a choice. It was certainly never forced on me either. I had to beg to go to games as a nipper. I was a right nause.