Oh heck yeah. I used to play Pokemon, then people stopped playing me at it and stated, "Oh, I only collect them now", then after my brother was the only left I could play with, the matches grew a bit stale and predictable as we each knew the others moves inside and out. Thus eventually all but one of my decks were dismantled and packed into a folder..which I subsequently lost. As for the remaining deck, I keep it around in case I walk into a magical dimension where beyond all logic and reasoning, people still play the game, giving me the perfect chance to whip it back out and relive old times. But unfortunately that is foiled right off the bat by the fact that A, I probably wouldn't even remember half the rules by the time I found someone to play with, and B, I already lost that deck of cards too, so it's a moot point anyways.
Shortly after my Pokemon Card matches were growing stale with my brother, we hastened their demise when he got me to start playing Magic The Gathering into full swing. I still have perhaps WAY too many cards from this, and still love the occasional match, but unfortunately as time goes by, it is rapidly becoming apparent to me that I am moving to all the most boring places in the world, where card games that don't involve hearts and spades on them are thought of as the devil, or too nerdy and bio-hazardous to be within a hundred kilometer proximity of anyone asking to play it. Of course given the fact that most MTG cards printed out in the newer sets are so ludicrously overpowered compared to the older cards, maybe it isn't just me after all. I remember when one colored mana and two colorless would get you a 2/2, or 1/2 with a small ability, and 6 to 7 mana maybe got a 6/6 with a penalty of sorts. Nowadays even lands, and cards with mana costs of two and three can obliterate a player by the third turn.
Halfway through my big Magic the gathering binge, the show Yugioh came out, and my brother of course wanted to get me into that card game as well. Unfortunately, thanks probably in large to the absolute ridiculousness of the TV show, finding someone else besides us who took the game seriously enough not to break out laughing when you posed the idea to them, let alone play it, was about as fruitful as searching for Leprechaun's IN SPACE... So yeah, those cards are sitting in some cardboard box....somewhere...
Oh well. At least I still keep track of my MTG cards...