Is there any reason pokemon *shouldn't* be a casual game?

Of course it needs some essential challenge and puzzle, but am I the only one who likes these games because you can just relax, do a fun but not stressful run through the story with a new team of bros? I enjoy the ultra masochistic challenge of competitive/hardcore games too, but just let pokemon be a relaxing adventure to catch em all, no?

I'm not saying that game freak is beyond criticism or that there isn't a such thing as 'too easy' either, but why would anyone want this series to become 'smogon: the official game'?