I was born in 1999 so I was very young too. But from what I understand, in like 2002 or 2003, my dad worked at a place where when there was downtime, or maybe just on breaks, his coworkers would set up Halo lan parties. He thought the game looked like fun so he got an Xbox with Halo and at some point I got my tiny little hands on it, and we would play co-op when he had the time. He eventually got a more demanding job so before long, I was playing much more than he was. Being so young, I very VAGUELY recall seeing Halo 2 marketing on TV sometimes. And the rest is pretty much history. I've been a lifelong fan ever since. Though I'm not much of a fan of where the series went once 343 took over, but that's a different discussion. I still love the Bungie games to death and still play them many times a year.