Ugh, I don't even REMEMBER when I started playing, but I was sure as heck YOUNG. Let me run a birthdate/game check...
O...O uh... Is it bad that the game came out when I was three, and I've been playing it all my life, practically? So, if I guess right, I was 4 or 5 when I got an XBOX Original and Halo 1... Holy nutballs.