Just because youboutvit on easy doesnt remove 99% of the story, Nd you only get the ending.
An example is the original Devil May Cry, you get all the scenes, you still get to do some exploration, but you get to skip passed the black cat like mini bosses, among a few other things, and in no way does that take away from the story.
People also said "if I want just a story, I'll read a book" which I also don't understand, because not all games come in book form, and actually, a great majority of them don't. Aside from that point, why read a book when you can play the book?(in a sense) and get the complete story still.
I'm not say opinions here are wrong, but I don't feel that cgallenge equals quality story telling.
When I want a challenge, I'll play an RTS online, or Demon's Souls, or even have a race to finish a game with a friend.
Challenge in standard single player games can be fun, but my main purpose for playing is for the story, so I don't see how "watching the ending in YouTube" is the same as plaything the entire game, challenge or no challenge.