I really enjoyed Yu-Gi-Oh when it first hit the states as a teenager, but if I were trying to get into it back at that age and it was in the state it's in now, I never would have been able to get into it because it would just be too daunting of a task. The cards with effects are too complex and there's way too many complicated special summons and extremely sufficient specific cards that rely on extreme specifically built decks, there's too much rule patchwork holding the system together, and half of the interesting cards that have been released over time are banned from competitive play.