Well for me it was both the anime and the cards, but the cards came fast. 6 years ago when i was in yr6 of primary school (dang those were the days) they had just come out, and EVERYONE had em, and i mean everyone, these were the days where the most popular kid in schl would be the guy with charizard, and then the guy with venusaur or blastoise lol.
anyway i watched the anime straight after and was hooked, and then got both games for my birthday, and it went on from there really. although i did go off it for a long time, all my mates did and so did everyone else, and i just was driven away frm it by other things, but about a yr ago i watched the anime just to see how it had changed, and i was shocked. anyway one thing led to another, i got the newest game, continued watching the anime, and here i was hooked again lol. and then about 6 months ago i had to take a lot of time off it due to personal stuff, issues, career school, various things, but now about a month ago i started up again. so yep it's been an up and down hill thing for me, but its always remained special to me.