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As for me, yeah, I like Legendaries. They are the most powerful Pokémon in the anime and complete powerhouses (well, most of them are Ubers, anyways, ain't that right, Shaymin?) in the games. I enjoy wasting loads of time trying to catch them and Pokémon like Latias, Latios, the Legendary Dogs and Mesprit are the most challenging and give you something to do for a while.
Most people that say they don't like Legendaries are normally just trying to act mature when they know nothing of competive battling. Oh, well, life goes on.