I completely get why people go back for multiple playthroughs of Mass Effect or Dragon Age, but Skyrim? (gameological.com)
This is one way the game encourages multiple playthroughs of stages. (backinmyplay.com)
Additionally, the game's design encourages multiple playthroughs as well, giving players plenty of incentive to dive back in to collect any items you may have missed previously, which easily extends the game by several more hours as you attempt to fill in the blanks of the game's story by gathering enough clues to complete the scrapbook and sketch galleries found within the workshop. (heypoorplayer.com)