I know it may seem nerdy, but at 23, I still love the show and the card game/video games. A kid in my elementary class introduced me to it. Since then, I watched the show (the 2001-2006 American version) and collected the cards. My first deck was the original TCG one of Yugi, and my brother who was also interested got the Kaiba one. He gave me all of his Yu-Gi-Oh! cards after he lost interest in it and I still have every card he gave me and every one I ever collected.
I used to play the card game with a neighbor of mine (one whom I had/have sexual feelings for, but that's a whole 'nother story) and he beat me just about every time. He did steal one of my brother's rare cards once, but luckily our mother came home in time and got the card back. I no longer have anyone to play the card game with, so I just collect them, and they are stored away in tins. I have been buying more structure decks recently to make my collection larger. It's nice to have more good cards to crush your potential opponent(s) with, ha ha.
Who else loves the show, games and card game? Do you still watch it and play the games, or collect the cards?