There is only one thing I hate about yugioh. Well, two things actually.
first, yugioh has completely overrrun the pokemon league where I'm at. Most people are playing yuioh at the card shop during league time instead of pokemon.
Second, most of the yugioh players who are their are so mean, they either laugh at the fact you like pokemon, talk about you behind your back, or totally beat you down in a duel and luagh aobut it the whole way.
besides those two annoying facts, I like yugioh, but yeah, pokemon would probably be much better off if yugioh hadn't come along. Too much unfriendly copmetition. That's why my pokemon league organizer often calls it "The evil Game" or "yugi-***. It really annoys him.