Zelda games are definitely not easy to beat. As a child I would use a walk through for anything difficult. I do not think anything is wrong with you for not having beat Skyward Sword. If I may ask how long did you play it for? I probably have only beat half of all the Zelda games, legitimately by myself. It sucks but sometimes life gets in the way and you don't have time for games, regardless of how amazing they are. Look at it this way, everyone who owns first person shooters generally do even play a chapter in single player, everyone plays for multiplayer. It is the old school gamers who buy a game to play solo and try to beat it on their own. Beating a Zelda game with no help does feel like an accomplishment.