Card games

I wonder how many kids play trading card games. I at know at least five people that play card games including me. Now adays if you walk in a store and look in the card section.There are TONS of really weird card games such as Card Jitsu,Pokemon,(it has quite a big section)Magic the Gathering, World of Warcraft,(I play that card game)and tons of other card games I cant even spell.I wonder what other crazy card games people will come up with in the future!